Robert Irwin brings exotic animals to 'Fallon' and Kevin Hart could not be more scared -- watch!

In celebration of Jimmy Fallon's birthday on Wednesday, comedian Kevin Hart teamed up with the Tonight Show star to co-host the whole episode -- which included one of the funniest exotic animal segments in recent memory.

Hart was already visibly uncomfortable when young nature conservationist Robert Irwin sat down with Fallon, and he wasn't shy about his distaste for being around wild animals.

When the 14-year-old animal expert -- who is also the son of the late Crocodile Hunter Steve Irwin -- said he'd heard that Hart was a "wildlife warrior" and lover of animals.

"You heard wrong. I'm the complete opposite," Hart shot back. "Jimmy, I'm gonna show you how fast black people are in a second... And I bet my life if you bring out something crazy, the Roots will be right behind me."

From the very start, Hart was having none of it, and ran off the stage when Irwin brought out a cuddly baby ostrich. So one can imagine how he reacted when they brought out two snakes right afterward.

Both Fallon and Irwin tried to coax Hart back on stage to hold one of the snakes, but the comic stood firm in his refusal to mess with wildlife.

"Let me tell you what I've gotten really good at in my life: saying no," Hart explained as the audience tried to egg him on by chanting, "Do it! Do it!"

For one moment, it seemed like Hart was considering it, and asked Irwin if the snakes bite.

"Well… they can bite, but they won't," Irwin replied cautiously.

"You lost me at, 'Well,'" Hart shot back, walking further away.

When the nature conservationist brought out a tarantula named Big Red, Fallon joined Hart in his apprehension, running up and standing flush with a pillar to avoid the spider.

"I'm gonna be honest with you, you better stay your ass over there," Hart threatened Irwin from distance.

"He's 14 years old!" Fallon interjected, also having fled from the spider.

"I don't care, Jimmy!" Hart shot back. "It's your birthday, you should hold that spider!"

13 PHOTOS
Terri Irwin and Steve Irwin together throughout their relationship
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Terri Irwin and Steve Irwin together throughout their relationship
SUNSHINE COAST, AUSTRALIA - 1993: (EUROPE AND AUSTRALASIA OUT) 'Crocodile Hunter' Steve Irwin and his wife, Terri Irwin, and 'Jonathon' the Green Iguana at Australia Zoo in Queensland. (Photo by Newspix/Getty Images)
Terri Irwin and Steve Irwin, The Crocodile Hunter during 2002 ShoWest Opening Day Luncheon at Paris Hotel in Las Vegas, Nevada, United States. (Photo by Denise Truscello/WireImage)
SAN FRANCISCO - JUNE 26: ***EXCLUSIVE*** 'The Crocodile Hunter', Steve Irwin, (R) shows a snake to his wife Terri (L) at the San Francisco Zoo on June 26, 2002 in San Francisco, California. Irwin is on a 3-week tour to promote the release of his first feature film, 'The Crocodile Hunter: Collision Course' is due in theaters July 12th. (Photo by Justin Sullivan/Getty Images)
Steve Irwin, Terri Irwin & daughter Bindi Irwin at the Arclight Cinerama Dome in Hollywood, California (Photo by Steve Granitz/WireImage)
Steve Irwin, Terri Irwin & daughter Bindi Irwin (Photo by Steve Granitz/WireImage)
Steve Irwin with wife Terri Irwin and daughter Bindi Irwin (Photo by Justin Kahn/WireImage)
Steve Irwin with his wife Terri and daughter Bindi (Photo by John Stanton/WireImage)
SYDNEY, NSW - SEPTEMBER 9, 2002: (EUROPE AND AUSTRALASIA OUT) Steve Irwin and his wife, Terri Irwin, in Sydney to promote their first feature film 'The Crocodile Hunter: Collision Course'. (Photo by Newspix/Getty Images)
SUNSHINE COAST, AUSTRALIA - DECEMBER 14, 2002: (EUROPE AND AUSTRALASIA OUT) 'Crocodile Hunter' Steve Irwin with his wife Terri Irwin, and daughter Bindi Irwin, and a baby crocodile at Australia Zoo in Queensland. (Photo by Newspix/Getty Images)
SUNSHINE COAST, AUSTRALIA - NOVEMBER November 20, 2003: (EUROPE AND AUSTRALASIA OUT) 'Crocodile Hunter' Steve Irwin, who is Queensland's Australian of the Year 2004 state finalist, is congratulated by his daughter Bindi Irwin and wife Terri Irwin at Australia Zoo. (Photo by Newspix/Getty Images)
SUNSHINE COAST, AUSTRALIA - JANUARY 2: (EUROPE AND AUSTRALASIA OUT) Steve Irwin and wife Terri, with daughter Bindi and baby son Bob, at a blessing ceremony by Tibetan Buddhist nuns, for the Irwin youngster. (Photo by Graeme Parkes/Newspix/Getty Images)
SUNSHINE COAST, AUSTRALIA - DECEMBER 1, 2005: (EUROPE AND AUSTRALASIA OUT) 'Crocodile Hunter' Steve Irwin, with his wife Terri Irwin, daughter Bindi Irwin, and son Bob Irwin, on Bob's 2nd birthday, at Australia Zoo sign at Beerwah on the Sunshine Coast. (Photo by Newspix/Getty Images)
SUNSHINE COAST, AUSTRALIA - JANUARY 3: (EUROPE AND AUSTRALASIA OUT) Steve Irwin with wife Terri, daughter Bindi & father gives a press conference outside his Australia Zoo at Beerwah on the Sunshine Coast defending his actions in taking son Bob (1 mth) into fenced crocodile enclosure on January 2, 2004. (Photo by Graeme Parkes/Newspix/Getty Images)
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After a while, Fallon sucked it up and sat down at the desk and let the furry arachnid crawl on his hand while sweating profusely. But Hart did his best to freak him out worse by trying to startle the spider by yelling and slamming his hands on the table. 

Eventually, at the end of the segment, a super nervous Hart was finally coerced into letting a falcon land on his arm while wearing a massive leather glove, and no one has ever looked more terrified.

ET's Kevin Frazier caught up with Hart at the premiere of his upcoming comedy, Night School, at the UrbanWorld Film Festival in New York City on Wednesday, hours after the Tonight Show taping, and the comic opened up about the experience.

"I'm not gonna lie, I wasn't as nice a participant as I probably should have been, because of the animals that were there," Hart admitted with a laugh. "They had tarantulas, they had snakes, they had ostriches, a falcon. Everything black people don't like was there."

Kevin Hart's new comedy Night School, co-starring Tiffany Haddish, hits theaters Sept. 28.

30 PHOTOS
Robert Irwin through the years
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Robert Irwin through the years
Bindi Irwin pictured at Australia Zoo for her 18th Birthday celebrations along with her mother Terri Irwin, brother Robert and her boyfriend Chandler Powell on July 24, 2016 in Queensland, Australia. (Photo by Matrix/GC Images)
Bindi Irwin pictured at Australia Zoo for her 18th Birthday celebrations along with her mother Terri Irwin, brother Robert and her boyfriend Chandler Powell on July 24, 2016 in Queensland, Australia. (Photo by Matrix/GC Images)
Bindi Irwin pictured at Australia Zoo for her 18th Birthday celebrations along with her mother Terri Irwin, brother Robert and her boyfriend Chandler Powell on July 24, 2016 in Queensland, Australia. (Photo by Matrix/GC Images)
LOS ANGELES, CA - MAY 21: (L-R) Robert Irwin, naturalist Terri Irwin and TV personality Bindi Irwin attend the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by David Livingston/Getty Images)
Bindi Irwin pictured at Australia Zoo for her 18th Birthday celebrations along with her mother Terri Irwin, brother Robert and her boyfriend Chandler Powell on July 24, 2016 in Queensland, Australia. (Photo by Matrix/GC Images)
LOS ANGELES, CA - MAY 21: Dancer/TV personality Keo Motsepe (L) and Robert Irwin attend the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CA - MAY 21: Robert Irwin attends the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CA - MAY 21: (L-R) Robert Irwin, TV personality Bindi Irwin and naturalist Terri Irwin attend the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by David Livingston/Getty Images)
LOS ANGELES, CA - MAY 21: (L-R) TV personality Bindi Irwin, Robert Irwin and naturalist Terri Irwin attend the Steve Irwin Gala Dinner at JW Marriott Los Angeles at L.A. LIVE on May 21, 2016 in Los Angeles, California. (Photo by David Livingston/Getty Images)
SUNSHINE COAST, AUSTRALIA - MARCH 21: (EUROPE AND AUSTRALASIA OUT) Robert Irwin poses at Australia Zoo in Beerwah on the Sunshine Coast on March 21, 2015 in Queensland, Australia. (Photo by Luke Marsden/Newspix/Getty Images)
SUNSHINE COAST, AUSTRALIA - MARCH 21: (EUROPE AND AUSTRALASIA OUT) Robert Irwin poses at Australia Zoo in Beerwah on the Sunshine Coast on March 21, 2015 in Queensland, Australia. (Photo by Luke Marsden/Newspix/Getty Images)
SYDNEY, AUSTRALIA - MARCH 12: Robert Irwin arrives at the 2015 ASTRA Awards at the Star on March 12, 2015 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images for the ASTRA Awards)
BRISBANE, AUSTRALIA - FEBRUARY 03: Robert Irwin speaks to media representatives during a Brisbane Lions AFL media opportunity at The Gabba on February 3, 2014 in Brisbane, Australia. (Photo by Matt Roberts/Getty Images)
BRISBANE, AUSTRALIA - FEBRUARY 03: Robert Irwin speaks to media representatives during a Brisbane Lions AFL media opportunity at The Gabba on February 3, 2014 in Brisbane, Australia. (Photo by Matt Roberts/Getty Images)
(L to R) Terri Irwin, her son Robert and daughter Bindi pose for photographs during a promotional event for Animal Planet's new series 'Steve Irwin's Wildlife Warriors' at Taipei City Zoo on October 20,2013. The channel will debut a series of eight films 'Steve Irwin's Wildlife Warriors' documenting the day-to-day conservation work and lives of the Irwin family - daughter Bindi, son Robert, and mother Terri. Steve Irwin, aka 'The Crocodile Hunter' and husband of Terri was an Australian wildlife expert, television personality and conservationist who died in 2006 after being pierced in the chest by a stingray barb while filming. AFP PHOTO / Mandy CHENG (Photo credit should read Mandy Cheng/AFP/Getty Images)
BEERWAH, AUSTRALIA - JULY 24: In this handout photo provided by Australia Zoo, Bindi Irwin celebrates her 15th birthday with her mother Terri Irwin and brother Robert Irwin, on July 24, 2013 in Beerwah, Australia. (Photo by Ben Beaden/Australia Zoo via Getty Images)
TARKINE, AUSTRALIA - JULY 17: (EUROPE AND AUSTRALASIA OUT) Terri Irwin and her children Bindi Irwin and Robert Irwin pose for a photo on July 17, 2013 in Tarkine, Australia. (Photo by Kidd Chris/Newspix/Getty Images)
SYDNEY, AUSTRALIA - FEBRUARY 18: Robert Irwin poses with a lizard during the Goulburn Valley Fresh launch at Martin Place on February 18, 2013 in Sydney, Australia. (Photo by Don Arnold/WireImage)
SUNSHINE COAST, AUSTRALIA - OCTOBER 2: In this handout photo provided by Australia Zoo, Terri Irwin and her son Robert Irwin pose for a photo after Robert feed freshwater crocodiles for the first time publicly at Australia Zoo on October 2, 2012 on the Sunshine Coast, Australia. Robert Irwin, 8, feed freshwater crocodiles for the first time publicly today. (Photo by Ben Beaden/Australia Zoo via Getty Images)
BEERWAH, AUSTRALIA - DECEMBER 1: In this handout photo provided by Australia Zoo, Robert Irwin slices his cake as he celebrates his eighth birthday, at Australia Zoo, on December 1, 2011 in Beerwah, Australia. (Photo by Australia Zoo via Getty Images)
SYDNEY, AUSTRALIA - NOVEMBER 27: Robert Irwin and Bindi Irwin arrive at the 'Puss in Boots' Australian Premiere at HOYTS Entertainment Quarter on November 27, 2011 in Sydney, Australia. (Photo by Caroline McCredie/Getty Images)
SYDNEY, AUSTRALIA - OCTOBER 07: Robert and Bindi Irwin arrive at the 2011 Nickelodeon Kid's Choice Awards at the Sydney Entertainment Centre on October 7, 2011 in Sydney, Australia. (Photo by Mark Metcalfe/Getty Images)
BEERWAH, QUEENSLAND - APRIL 3: (EUROPE AND AUSTRALASIA OUT) Bindi Irwin, Terri Irwin and Robert Irwin feed a giraffe at Australia Zoo on April 3, 2010 in Beewah, Queensland. The giraffes will be Australia Zoo's main attraction for the upcoming winter.(Photo by Robyne Cuerel/Newspix/Getty Images)
SYDNEY, AUSTRALIA - OCTOBER 07: Robert Irwin arrives at the 2011 Nickelodeon Kid's Choice Awards at the Sydney Entertainment Centre on October 7, 2011 in Sydney, Australia. (Photo by Mark Metcalfe/Getty Images)
SUNSHINE COAST, AUSTRALIA - NOVEMBER 15: WWE Superstar Edge with Robert, Bindi and Terri Irwin celebrate Steve Irwin Day at Australia Zoo on November 15, 2009 in Sunshine Coast, Australia. (Photo by Marc Grimwade/WireImage)
Robert, Bindi and Terri Irwin celebrate Steve Irwin Day at Australia Zoo on November 15, 2009 in Sunshine Coast, Australia. (Photo by Marc Grimwade/WireImage)
BEERWAH, AUSTRALIA - JULY 24: TV personlity Bindi Irwin celebrates her 11th birthday with her mother Terri Irwin and brother Robert (Bob) Irwin at Australia Zoo on July 24, 2009 in Beerwah on the Sunshine Coast near Brisbane, Australia. (Photo by Bradley Kanaris/Getty Images)
SUNSHINE COAST, AUSTRALIA - NOVEMBER 15: Terri and Robert Irwin attend the official launch of the Australian Wildlife Hospital at Australia Zoo on November 15, 2008 on the Sunshine Coast, Australia. The opening ceremony timed to coincide with the second annual Steve Irwin Day celebration realised Steve Irwin's dream to establish the world's largest wildlife hospital to honour his mother Lyn Irwin who had been a pioneer in wildlife care in Queesnalnd, Australia. The new hospital is also a living memorial to Steve Irwin. (Photo by Lisa Maree Williams/Getty Images)
BRISBANE, AUSTRALIA - NOVEMBER 15: Robert Irwin plays with a statue of the family that was unveiled today during 'Steve Irwin Memorial Day' at Australia Zoo on November 15, 2007 on the Sunshine Coast, Australia. Steve Irwin day is a celebration of the life of the late Steve Irwin, the enigmatic 'Crocodile Hunter' who was killed by a stingray barb to his chest on September 4, 2006 whilst filming a documentary in Queensland. Australia Zoo is celebrating his life by inviting people from around the world to join in remembering what Steve was famous for: family, fun and wildlife. (Photo by Bradley Kanaris/Getty Images)
BRISBANE, AUSTRALIA - NOVEMBER 15: (L-R) Steve's father Bob, Wes Mannion, Bindi Irwin, Robert Irwin and Terri Irwin surrounded by Australia Zoo staff attend 'Steve Irwin Memorial Day' at Australia Zoo on November 15, 2007 on the Sunshine Coast, Australia. Steve Irwin day is a celebration of the life of the late Steve Irwin, the enigmatic 'Crocodile Hunter' who was killed by a stingray barb to his chest on September 4, 2006 whilst filming a documentary in Queensland. Australia Zoo is celebrating his life by inviting people from around the world to join in remembering what Steve was famous for: family, fun and wildlife. (Photo by Marc Grimwade/WireImage)
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