To Go to the bathroom (toilet) and do a Poo.
Man, I'm really hangin' to pump a stump
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Created when a woman is on her knees and forearms sticking her ass in the air thus making a 'stump' ready for pumping by her male partner.
"Dude, last night was awesome. We went back to her place and the next thing I know, she takes off her clothes and makes a pump stump right in the middle of the living room floor. Rug burns on my knees are killing me."
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A one pump stump is when a male ejaculates after one pump in and out of a vagina. Also a short chode like penis.
"I had sex with the hottest girl last night to bad it was over quick because of my one pump stump"