1. Sexually desirable woman.
2. Sexual relations.

Originates from old-timers telling how when they wanted sex from a particular woman they would simply "push her down on the bed".
Guy 1: How 'bout her? Would you push that down, dude?
Guy 2: Oh yeah. That's some prime pushdown right there.
by exitflagger April 30, 2008
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The push of food in your intestines, usually causing you to have fart or go to the bathroom.

First used in Scrubs by Chris Turk.
"Baby I had a big old lunch, now I got the downtown pushdown!"

"No Turk, no phuffie in here!"
by Jessica Rolfsmeyer February 25, 2008
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