The act of getting behind a woman and putting 1 leg up on an object that is higher than the ground, as to make her legs spread open from behind for easier leverage.
Yo Dawg, last night I was chillin with this chick and she was a freak, dawg. I post her up on a kitchen stool.

You wouldnt post her up, dawg? Tell me you wouldn't post it up! Real talk?
by Sancho_Sam February 19, 2010
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To sleep with or “enjoy” your time with a girl
Person one: dude did you post it with her? Person two: yeah I got all up in there
by Dat boi ally November 17, 2017
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