The line comes from Arthur, the 1981 comedy starring Dudley Moore as Arthur Bach, a wealthy New York heir who is drunk through most of the film. Written and directed by Steve Gordon, the movie made Moore a star in America and earned John Gielgud an Oscar as his valet Hobson. Clips of Arthur's denials have circulated online as reaction audio because the joke needs no context, and this short denial has become a shorthand for obviously false claims about drinking.