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1.
An acronym formed from a mix of other most powerful curse words. Used when there is no better way to describe the disgustingness of a person; the worst kind of person possible. Also used as a "cover all" when one cannot think of words to characterize someone who is absolute "dirt". Can be used to describe a person of any sex.

Onanist. Bitch. Shit. Prick. Motherfucker. Iceweasel.
1. He's such an OBSPMI it's believable, he wonders why nobody likes him.

2. She's so OBSPMI!! I can't stand her, she needs to stop sluting around with anyone that has a dick.
by What's Trending December 18, 2012