Jay Leno mocks 'douche bag' Billy Bush as he 'tags in' for Jimmy Fallon on 'Tonight Show'


Jay Leno stopped by Jimmy Fallon's Tonight Show on Monday. As on past visits, the former Tonight Show host filled in on part of his successor's monologue, "tagging in" after Fallon claims he pulled a muscle.

Leno joked about Donald Trump, Hillary and Bill Clinton, Anthony Weiner and the recent Republican and Democratic national conventions.

Since it was Halloween, Leno also made a few holiday-themed jokes, including one about Hillary Clinton getting scared when a trick-or-treater showed up dressed as "a lie detector."

And Leno, who's still a member of the NBC family with his Jay Leno's Garage show on CNBC, didn't take long to mock former NBC employee Billy Bush, who left the Today show following his involvement in a lewd, hot-mic conversation from a 2005 Access Hollywood appearance by Trump.

See photos of Jay Leno through the years:

36 PHOTOS
Jay Leno through the years
See Gallery
Jay Leno through the years
WASHINGTON, DC - OCTOBER 19: Honoree Jay Leno poses for a photo with fans at the 2014 Kennedy Center's Mark Twain Prize For American Humor honoring Jay Leno at The Kennedy Center on October 19, 2014 in Washington, DC. (Photo by Paul Morigi/WireImage)
WASHINGTON, DC - OCTOBER 19: (L to R) Alex Sykes, Wanda Sykes, honoree Jay Leno and his wife Mavis arrive at the 2014 Kennedy Center's Mark Twain Prize For American Humor honoring Jay Leno at The Kennedy Center on October 19, 2014 in Washington, DC. (Photo by Paul Morigi/WireImage)
WASHINGTON, DC - OCTOBER 19: Honoree Jay Leno arrives at the 2014 Kennedy Center's Mark Twain Prize For American Humor honoring Jay Leno at The Kennedy Center on October 19, 2014 in Washington, DC. (Photo by Paul Morigi/WireImage)
WASHINGTON, DC - OCTOBER 19: Honoree Jay Leno and his wife Mavis Leno arrive at the 2014 Kennedy Center's Mark Twain Prize For American Humor honoring Jay Leno at The Kennedy Center on October 19, 2014 in Washington, DC. (Photo by Paul Morigi/WireImage)
WASHINGTON, DC - OCTOBER 19: Honoree Jay Leno arrives at the 2014 Kennedy Center's Mark Twain Prize For American Humor honoring Jay Leno at The Kennedy Center on October 19, 2014 in Washington, DC. (Photo by Paul Morigi/WireImage)
WASHINGTON, DC - OCTOBER 19: Honoree Jay Leno arrives at the 2014 Kennedy Center's Mark Twain Prize For American Humor honoring Jay Leno at The Kennedy Center on October 19, 2014 in Washington, DC. (Photo by Paul Morigi/WireImage)
BEVERLY HILLS, CA - OCTOBER 11: Master of Ceremonies Jay Leno speaks onstage at the 2014 Carousel of Hope Ball presented by Mercedes-Benz at The Beverly Hilton Hotel on October 11, 2014 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)
BEVERLY HILLS, CA - OCTOBER 11: Recording artist Josh Groban (L) and master of ceremonies Jay Leno speak onstage at the 2014 Carousel of Hope Ball presented by Mercedes-Benz at The Beverly Hilton Hotel on October 11, 2014 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)
BEVERLY HILLS, CA - OCTOBER 11: Master of Ceremonies Jay Leno (L) and music producer David Foster speak onstage at the 2014 Carousel of Hope Ball presented by Mercedes-Benz at The Beverly Hilton Hotel on October 11, 2014 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)
BEVERLY HILLS, CA - OCTOBER 11: Master of Ceremonies Jay Leno (L) and Carousel of Hope Chairman Barbara Davis speak onstage at the 2014 Carousel of Hope Ball presented by Mercedes-Benz at The Beverly Hilton Hotel on October 11, 2014 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)
BEVERLY HILLS, CA - OCTOBER 11: Jay Leno and wife Mavis Leno arrive at the 2014 Carousel Of Hope Ball Presented By Mercedes-Benz at The Beverly Hilton Hotel on October 11, 2014 in Beverly Hills, California. (Photo by Gregg DeGuire/WireImage)
BEVERLY HILLS, CA - OCTOBER 11: Comedian Jay Leno attends the 2014 Carousel of Hope Ball at The Beverly Hilton Hotel on October 11, 2014 in Beverly Hills, California. (Photo by Jason LaVeris/FilmMagic)
BURBANK, CA - SEPTEMBER 24: Jay Leno poses for a portrait at his car garage on Wenesday September 24, 2014 in Burbank, CA. The longtime host of The Tonight Show, continues to tour extensively performing comedy. Leno is going to be the next recipient of the Mark Twain Prize for American Humor. (Photo by Matt McClain/ The Washington Post via Getty Images)
BURBANK, CA - SEPTEMBER 24: Jay Leno is interviewed at his car garage on Wenesday September 24, 2014 in Burbank, CA. The longtime host of The Tonight Show, continues to tour extensively performing comedy. Leno is going to be the next recipient of the Mark Twain Prize for American Humor. (Photo by Matt McClain/ The Washington Post via Getty Images)
LANCASTER, PA - SEPTEMBER 21: Jay Leno changes clothes after performing at the American Music Theatre on Sunday September 21, 2014 in Lancaster, PA. The longtime host of The Tonight Show, continues to tour extensively performing comedy. Leno is going to be the next recipient of the Mark Twain Prize for American Humor. (Photo by Matt McClain/ The Washington Post via Getty Images)
LANCASTER, PA - SEPTEMBER 21: Jay Leno performs at the American Music Theatre on Sunday September 21, 2014 in Lancaster, PA. The longtime host of The Tonight Show, continues to tour extensively performing comedy. Leno is going to be the next recipient of the Mark Twain Prize for American Humor. (Photo by Matt McClain/ The Washington Post via Getty Images)
LANCASTER, PA - SEPTEMBER 21: Jay Leno is interviewed before performing at the American Music Theatre on Sunday September 21, 2014 in Lancaster, PA. The longtime host of The Tonight Show, continues to tour extensively performing comedy. Leno is going to be the next recipient of the Mark Twain Prize for American Humor. (Photo by Matt McClain/ The Washington Post via Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 4610 -- Pictured: Host Jay Leno reminisces on his 22 year run as host of the Tonight Show on February 6, 2014. (Photo by: Chris Haston/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 4610 -- Pictured: (l-r) Actor Jack Black, host Jay Leno and Kim Kardashian during Jay Leno's farewell song on February 6, 2014. (Photo by: Stacie McChesney/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 4610 -- Pictured: (l-r) Actress Carol Burnett, singer Sheryl Crow, actor Jack Black, basketball player Chris Paul, host Jay Leno, actor Jim Parsons, Kim Kardashian, and Oprah Winfrey during Jay Leno's 'Farewell Song' on February 6, 2014. (Photo by: Stacie McChesney/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 4610 -- Pictured: (l-r) Musical guest Garth Brooks and host Jay Leno on February 6, 2014. (Photo by: Chris Haston/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 4610 -- Pictured: Musical guest Garth Brooks performs on February 6, 2014. (Photo by: Stacie McChesney/NBC/NBCU Photo Bank via Getty Images)
BURBANK, CA - FEBRUARY 06: Comedian Jay Leno appears onstage during a commercial break on the final episode of "The Tonight Show with Jay Leno" at The Burbank Studios on February 6, 2014 in Burbank, California. (Photo by Kevin Winter/Getty Images)
THE TONIGHT SHOW STARRING JOHNNY CARSON -- Air Date 01/28/1992 -- Pictured: Guest host Jay Leno on January 28, 1992 (Photo by Joseph Del Valle/NBC/NBCU Photo Bank via Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 30 -- Pictured: host Jay Leno during 'presidential poll' segment on June 30, 1992 (pictured) president William (Bill) Jefferson Clinton (Photo by Wendy Perl/NBC/NBCU Photo Bank via Getty Images)
BURBANK, CA - AUGUST 4: Senator Hillary Rodham Clinton appears on the 'Tonight Show with Jay Leno' at the NBC Studios August 4, 2003 in Burbank, California. (Photo by Kevin Winter/Getty Images)
THE TONIGHT SHOW WITH JAY LENO -- Episode 4570 -- Pictured: (l-r) Former President George W. Bush during an interview with host Jay Leno on November 19, 2013 -- (Photo by: Stacie McChesney/NBC/NBCU Photo Bank via Getty Images)
Al Gore at 'The Tonight Show with Jay Leno' at the NBC Studios in Burbank, Ca. Wednesday, Nov. 27, 2002. Photo by Kevin Winter/ImageDirect.
LATE NIGHT WITH DAVID LETTERMAN -- Episode 1144 -- Pictured: (l-r) The new host of 'The Tonight Show' Jay Leno, host David Letterman on May 7, 1992 -- (Photo by: NBC/NBCU Photo Bank via Getty Images)
Comedian Jay Leno during an interview with guest host David Letterman on July 4, 1979. (Photo by Paul Drinkwater/NBCU Photo Bank)
Jay Leno arrives on May 5, 2014 for a demonstration in support of Women's Rights and LGBT groups across from the Beverly Hills Hotel, owned by the Sultan of Brunei, who also owns the Bel-Air Hotel in Los Angeles, in Beverly Hills, California, which passed a resolution demanding May 7, 2014 the Sultan of Brunei, Hassanal Bolkiah, sell his hotel in the posh US city after he announced last week that he would push ahead with implementing sharia law, despite criticism both at home and internationally. The city council said they will send the resolution to the State Department asking Washington to 'take appropriate action to condemn the Brunei government's policies.' AFP PHOTO / Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images)
BEVERLY HILLS, CA - MAY 5: Comedian Jay Leno participates in a rally to protest draconian punishment of women and gay people announced by the Sultan of Brunei outside the Beverly Hills Hotel, which is owned by the Sultan, on May 5, 2014 in Beverly Hills, California. The Sultan of Brunei is planning to implement a brand of Sharia Penal Code which calls for the stoning of people for various offenses including homosexual acts, adultery, sodomy and extramarital sexual relations, a move that has been criticized by The United Nations. (Photo by David McNew/Getty Images)
BEVERLY HILLS, CA - MAY 5: Comedian Jay Leno participates in a rally to protest draconian punishment of women and gay people announced by the Sultan of Brunei outside the Beverly Hills Hotel, which is owned by the Sultan, on May 5, 2014 in Beverly Hills, California. The Sultan of Brunei is planning to implement a brand of Sharia Penal Code which calls for the stoning of people for various offenses including homosexual acts, adultery, sodomy and extramarital sexual relations, a move that has been criticized by The United Nations. (Photo by David McNew/Getty Images)
BEVERLY HILLS, CA - MAY 5: Comedian Jay Leno participates in a rally to protest draconian punishment of women and gay people announced by the Sultan of Brunei outside the Beverly Hills Hotel, which is owned by the Sultan, on May 5, 2014 in Beverly Hills, California. The Sultan of Brunei is planning to implement a brand of Sharia Penal Code which calls for the stoning of people for various offenses including homosexual acts, adultery, sodomy and extramarital sexual relations, a move that has been criticized by The United Nations. (Photo by David McNew/Getty Images)
BEVERLY HILLS, CA - MAY 5: Comedian Jay Leno participates in a rally to protest draconian punishment of women and gay people announced by the Sultan of Brunei outside the Beverly Hills Hotel, which is owned by the Sultan, on May 5, 2014 in Beverly Hills, California. The Sultan of Brunei is planning to implement a brand of Sharia Penal Code which calls for the stoning of people for various offenses including homosexual acts, adultery, sodomy and extramarital sexual relations, a move that has been criticized by The United Nations. (Photo by David McNew/Getty Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

Read more: Billy Bush, NBC Reach Settlement Over Donald Trump Tape

"I had a great costume this year," Leno said. "Earlier tonight I put a douche bag on my head, went out as Billy Bush."

He went on to suggest that Trump "hire Billy," claiming that "this way he could grab Bush whenever he wanted," alluding to Trump's comment about grabbing women by their genitals.

Fallon tagged back in during a series of "The economy is so bad...;" jokes, even throwing out a few himself.

"Anthony Weiner is faxing people pictures of his junk," Fallon said, later adding, "Instead of paying for heat, people are huddling around exposing Samsung phones just for the warmth."

Watch Leno's full substitute monologue above.

Read more: Billy Bush and the New Ethics of Entertainment Journalism

See photos of Billy Bush through the years:

23 PHOTOS
Billy Bush through the years
See Gallery
Billy Bush through the years
NEW YORK, NY - AUGUST 22: NBC News' Billy Bush in conversation with Jeff Rossen for SiriusXM's TODAY Show Radio at SiriusXM Studios on August 22, 2016 in New York City. (Photo by Craig Barritt/Getty Images for SiriusXM)
NEW YORK, NY - SEPTEMBER 10: Billy Bush arrives for the women's final at Arthur Ashe Stadium on day 13 of the 2016 US Open at USTA Billie Jean King National Tennis Center on September 10, 2016 in the Queens borough of New York City. (Photo by Jean Catuffe/GC Images)
RIO DE JANEIRO, BRAZIL - AUGUST 08: Billy Bush & Olympic Legend Carl Lewis for Speed-Walking Race for Ages at Copacabana beach on August 8, 2016 in Rio de Janeiro, Brazil. (Photo by Joe Scarnici/Getty Images for Access Hollywood )
CULVER CITY, CA - MAY 21: TV personality/host Billy Bush attends the Kaleidoscope Ball at 3LABS on May 21, 2016 in Culver City, California. (Photo by Emma McIntyre/Getty Images)
NEW YORK, NY - FEBRUARY 10: Billy Bush visits 'The Elvis Duran Z100 Morning Show' at Z100 Studio on February 10, 2016 in New York City. (Photo by D Dipasupil/Getty Images)
NEW YORK, NY - FEBRUARY 11: Radio host Billy Bush (L) and actress Olivia Jordan attend The American Heart Association's Go Red For Women Red Dress Collection 2016 Presented By Macy's at The Arc, Skylight at Moynihan Station on February 11, 2016 in New York City. (Photo by Cindy Ord/Getty Images for AHA)
NEW YORK, NY - FEBRUARY 10: Billy Bush visits 'The Elvis Duran Z100 Morning Show' at Z100 Studio on February 10, 2016 in New York City. (Photo by D Dipasupil/Getty Images)
NEW YORK, NY - FEBRUARY 10: Billy Bush (L) and Bethany Watson at 'The Elvis Duran Z100 Morning Show' at Z100 Studio on February 10, 2016 in New York City. (Photo by D Dipasupil/Getty Images)
BEVERLY HILLS, CA - DECEMBER 09: Billy Bush arrives at the Make-A-Wish Greater Los Angeles Annual Wishing Well Winter Gala at the Beverly Wilshire Four Seasons Hotel on December 9, 2015 in Beverly Hills, California. (Photo by Joe Scarnici/WireImage)
BEVERLY HILLS, CA - DECEMBER 09: (L-R) TV personalities Billy Bush and Kit Hoover attend the Make-A-Wish Greater Los Angeles Annual Wishing Well Winter Gala at the Beverly Wilshire Four Seasons Hotel on December 9, 2015 in Beverly Hills, California. (Photo by Barry King/Getty Images)
BEVERLY HILLS, CA - DECEMBER 09: TV personality Billy Bush speaks onstage during Make-A-Wish Greater Los Angeles Honoring Oscar De La Hoya, Michael Rosenfeld And Tom Mone at its Annual Wishing Well Winter Gala at The Beverly Hilton Hotel on December 9, 2015 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images for Make-A-Wish Greater Los Angeles)
YOUNTVILLE, CA - NOVEMBER 13: Billy Bush attends the Celebrity Tribute during the Napa Valley Film Festival 2015 at the Lincoln Theatre on November 13, 2015 in Yountville, California. (Photo by Tim Mosenfelder/Getty Images)
WEST HOLLYWOOD, CA - OCTOBER 29: Master of Ceremonies Billy Bush attends the imagine1day Visionary Leadership Dinner at The London West Hollywood on October 29, 2015 in West Hollywood, California. (Photo by Rachel Murray/Getty Images for imagine1day)
NEW YORK, NY - JUNE 11: TV host, Billy Bush attends 16th Annual Ubuntu Education Fund 1 Million to One: Changing The Odds Gala at Gotham Hall on June 11, 2015 in New York City. (Photo by John Lamparski/WireImage)
BEVERLY HILLS, CA - SEPTEMBER 09: Radio host Billy Bush attends the Farrah Fawcett Foundation 1st annual Tex-Mex Fiesta at Wallis Annenberg Center for the Performing Arts on September 9, 2015 in Beverly Hills, California. (Photo by Matthew Simmons/Getty Images)
NEW YORK, NY - JUNE 10: Television personalities Bethenny Frankel (L) and Billy Bush tape a segment at 'Access Hollywood' at the NBC Rockefeller Center Studios on June 10, 2015 in New York City. (Photo by Ray Tamarra/GC Images)
LAS VEGAS, NV - APRIL 23: TV personality Billy Bush attends The CinemaCon Big Screen Achievement Awards on April 23, 2015 in Las Vegas, Nevada. (Photo by C Flanigan/FilmMagic)
BURBANK, CA - MARCH 08: TV Host Billy Bush attends the advance screening of 'Cinderella' benefiting Los Angeles JDRF at Walt Disney Studios on March 8, 2015 in Burbank, California. (Photo by Paul Archuleta/FilmMagic)
NEW YORK, NY - NOVEMBER 17: (EXCLUSIVE COVERAGE/SPECIAL RATES APPLY) TV host Billy Bush visits 'The Elvis Duran Z100 Morning Show' at Z100 Studio on November 17, 2014 in New York City. (Photo by Ben Gabbe/Getty Images)
WATCH WHAT HAPPENS LIVE -- Pictured (l-r): Andy Cohen, Chloe Grace Moretz and Billy Bush -- (Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)
NEW YORK, NY - SEPTEMBER 23: EXCLUSIVE ACCESS/SPECIAL RATES APPLY - Billy Bush visits 'The Elvis Duran Z100 Morning Show' at Z100 Studio on September 23, 2014 in New York City. (Photo by Astrid Stawiarz/Getty Images)
WATCH WHAT HAPPENS LIVE -- Pictured: Billy Bush -- (Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE


Read Full Story

Sign up for Entertainment Insider by AOL to get the hottest pop culture news delivered straight to your inbox!

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.