The Original Butthead

OK, not much going on in 56572, at least not much that we can tell the world about, so I'm going to let fly with something I've given more thought to than usual. Haven't I Mom? Even my Mother has had fun with this one:

Things just aren't what they used to be. As a kid I would crawl up in the barber's chair and sit my - what these days is called a Heinie - on a board stretched out across the armrests. Dad, who always wore a crewcut, would tell the barber to give me a Heinie. These days, if I asked for a Heinie, I could expect a Heineken.

The word Heinie, as I knew it, today seems to be known only by those older than me. Try it out yourself. Ask others the meaning of the word Heinie. Each generation seems to have a different meaning. Let me know what you find. Any other Buttheads out there?