Wikipedia
Butt-Head is a fictional character from the MTV animated series Beavis and Butt-Head. He is voiced by the show's creator, Mike Judge.
Mike Judge got the name Butt-Head from his university days, when he knew a couple of kids who had the nicknames 'Iron Butt' and 'Butt-Head'. Some of the mispronunciations of Butt-Head's name by adults have been Butthole, Bum-Head, Butter-head, Buttbrain, Tangpode, Nuthead, Bob-head, and Butter (Wall Of Youth). Senator Ernest Hollings first used the name 'Buffcoat' on the floor of the U.S. Senate — an incident believed to have inspired incidents of mispronunciation of the title characters' names.
Usage examples of "butt-head".
No Letterman, Leno, and Beavis and Butt-head, NordicTrack commercials.
For my money, Beavis and Butt-head represented some of the best American satire of the nineties, and Snoop and his fellow rappers have much to say about America’s social ills, so I’m not going down the road of blaming MTV.