Dustin Lance Black slams Sam Smith after Oscar win

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Sam Smith Blasted Online After Oscar Speech

Sam Smith claimed to be the first openly gay man to win an Oscar on Sunday night during his acceptance speech for Best Original Song for "Writing's On The Wall" from the most recent James Bond film, "Spectre."

The only problem, of course, is that his claim was completely incorrect.

Elton John, Bill Condon and Stephen Sondheim, among many other openly gay men, have also won Academy Awards.

SEE ALSO: Sam Smith dedicates his Oscar to LGBT community

Smith misquoted Sir Ian McKellen, who said in January that an openly gay man had never won in the lead actor category, and at least one of those former winners slammed him for his mistake.

Dustin Lance Black, who won for Best Original Screenplay for "Milk" in 2008, called Smith out on Twitter, saying, "Hey @SamSmithWorld, if you have no idea who I am, it may be time to stop texting my fiancé," which he followed with a link to his emotional acceptance speech from eight years ago.

Black's fiancé is British Olympic diver Tom Daley.

The diss quickly went viral, and by press time had over 5,000 retweets.

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Dustin Lance Black slams Sam Smith after Oscar win
Actor Ryan Gosling (L) and Actor Russell Crowe present on stage at the 88th Oscars on February 28, 2016 in Hollywood, California. AFP PHOTO / MARK RALSTON / AFP / MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
Charles Randolph (L) and Adam McKay accep their awards for Best Adapted Screenplay, The Big Short on stage at the 88th Oscars on February 28, 2016 in Hollywood, California. AFP PHOTO / MARK RALSTON / AFP / MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
HOLLYWOOD, CA - FEBRUARY 28: David White (L) and Mark A. Mangini win the Best Sound Editing award for 'Mad Max: Fury Road' onstage during the 88th Annual Academy Awards at the Dolby Theatre on February 28, 2016 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
Members of Ex-Machina visual effects team accept their award for visual effects on stage at the 88th Oscars on February 28, 2016 in Hollywood, California. AFP PHOTO / MARK RALSTON / AFP / MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
THE OSCARS(r) - THEATRE - The 88th Oscars, held on Sunday, February 28, at the Dolby Theatre(r) at Hollywood & Highland Center(r) in Hollywood, are televised live by the ABC Television Network at 7 p.m. EST/4 p.m. PST. (Photo by Adam Taylor/ABC via Getty Images) CATE BLANCHETT
HOLLYWOOD, CA - FEBRUARY 28: Mark A. Mangini (L) and David White accept the Best Sound Editing award for 'Mad Max: Fury Road' onstage during the 88th Annual Academy Awards at the Dolby Theatre on February 28, 2016 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
WEST HOLLYWOOD, CA - FEBRUARY 28: Musicians Verdine White (L) and Philip Bailey (R) of Earth, Wind & Fire and Beck attend the 24th Annual Elton John AIDS Foundation's Oscar Viewing Party at The City of West Hollywood Park on February 28, 2016 in West Hollywood, California. (Photo by Michael Kovac/Getty Images for EJAF)
HOLLYWOOD, CA - FEBRUARY 28: Actors Daisy Ridley (L) and Dev Patel speak onstage during the 88th Annual Academy Awards at the Dolby Theatre on February 28, 2016 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
Director Asif Kapadia (L) and James Gay-Rees (R) accept the award for Best Documentary Feature, Amy, on stage at the 88th Oscars on February 28, 2016 in Hollywood, California. AFP PHOTO / MARK RALSTON / AFP / MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
HOLLYWOOD, CA - FEBRUARY 28: (EDITORS NOTE: Image has been converted to black and white.) Actor Leonardo DiCaprio attends the 88th Annual Academy Awards at Hollywood & Highland Center on February 28, 2016 in Hollywood, California. (Photo by Mike Windle/Getty Images)
HOLLYWOOD, CA - FEBRUARY 28: (EDITORS NOTE: Image has been converted to black and white.) Actress Rachel McAdams (C) attends the 88th Annual Academy Awards at Hollywood & Highland Center on February 28, 2016 in Hollywood, California. (Photo by Mike Windle/Getty Images)
HOLLYWOOD, CA - FEBRUARY 28: Musician Dave Grohl performs onstage during the 88th Annual Academy Awards at the Dolby Theatre on February 28, 2016 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
HOLLYWOOD, CA - FEBRUARY 28: Academy of Motion Picture Arts and Sciences President Cheryl Boone Isaacs speaks onstage during the 88th Annual Academy Awards at the Dolby Theatre on February 28, 2016 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
Actor Jacob Tremblay (L) and Actor Abraham Attah present on stage at the 88th Oscars on February 28, 2016 in Hollywood, California. AFP PHOTO / MARK RALSTON / AFP / MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)
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