"Kimmel" guest Chris Farney twice uttered the expletive used to describe a sexual act on Friday's show, with the first one stopped through the normal delay process and the second slipping past censors, the New York Daily News reported Tuesday.
"The broadcast of this word violates the standards that we have in place on 'JKL,' which airs 12:05 a.m. to 1:05 a.m.," ABC network officials said. "The missed word was edited out for the West Coast feed. We sincerely apologize to our audience and to our affiliates for the mistake."
Farney is the man who was slapped by fitness guru Richard Simmons last Wednesday at a Phoenix airport.
Earlier this month, the Federal Communications Commission deemed the expletive indecent and profane after rock singer Bono used it during NBC's telecast of the Golden Globe Awards ceremony.
Florida bear attack: Black bear mauls woman's face
Texas principal bans speaking Spanish, stirs controversy