Slang for pregnancy. Used mainly by W.A.S.P.s to annoy their mothers. Also used by parents to creep their kids' friends out.
Mother, it's not my problem. I used to be your utero groupie, but that was 16 years ago.

"Zackary! My little utero groupie!"

"Dude, is your mom high, or something?"
by Skyedot October 13, 2009
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