No if your refering to the episode Beavis and Butt-head are dead... Butt-Head gave the excuse 'Beavis and Butt-Head are dead' over the phone to his school so they could skip. It was the last episode so they called it that
It appears that beavis who is 17 is about 5'2 or 5'3 and butthead who's also 17 is 5'5 to 5'7, but in the beavis and butthead do America movie they are only 3'10