Top Definition
To walk up behind someone and repeatedly use your groin to push forcibly on their buttock region (pants and parties knowing each other optional and strongly discouraged)

To show fake ignorance about a sexual term to have it acted out.
"I had a terrible underwear fire, and the only way that I could put it out quickly was by thrusting a middle schooler with the curvaceous woman in the pew in front of me."
by BKmyWAY November 13, 2010

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