It's funny, a lot of the Gen Y lingo was in use by rich gen x kids at elite Eastern boarding schools and Ivy Leagues. These kinds of terms were not so common among the general public. It's almost like it took a decade or two for this patois to percolate down to the unwashed masses, like the way BMW or Louis Vuitton were once much more exclusive brands but are now "entry level luxury" for temps from Hoboken.
Same thing happened with long hair; prep school boys were wearing long hair by 1968...by 1978 working class guys had long hair and prep school boys had moved on...back to the yuppie looks of the 80's/30's 40's..
Nothing worse than an older person trying to be up to the minute in slang.
It was ridiculous when I was 15 and it's ridiculous 30 years later when I don't understand kids when they are talking to each other. Which is probably just as well.