1. milf
"Mother I'd Like (to) Fuck"
mothers, whether married, separated or divorced, that a male individual sees as physical attractive enough to want to have sexual intercourse with them. Just cuz their moms doesn't mean that they don't need a spark in their love life. If they've ever breastfed,they have really responsive nipples and a core of erectile tissue in their breasts. The ones in good shape have worked at regaining control over their vaginas (Kegel exercises).MILFs are usually real careful about birth control, they know accidents happen but they take responsible steps. They want to fuck with abandon, with no romantic complications for their under-19 family.
A MILF is any mother that is sexually desirable.
From Urban Dictionary
and my own take - yeah the movie brought it to public attention and the issue that Rolling Stone did on it made it even more famous - but it was definitely around for a long time before that - of course back in the 60s we called it MIS's
Mothers I Screwed
Free Love was such a nice term that brings back so many nice memories
Got to agree on the B Spears - this pic of her explains it all