ass pumping - utilization of the buttocks in a general up and down motion to facilitate the use of a pump or other similar applied pressure working device. Definition may be inclusive of fully or partially clothed buttocks, or entirely unclothed buttocks.
Common devices used when ass pumping:
tire pump, beer keg "tap"
Expressions: "You can pump a keg with that ass!"
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wen u grab a fuckin turkey baster and blast air into ur anus, then lol u fart out the ait on vent like a dik sleeb. ovarie ovvare aovaoadoaha nai aisiahnai hniasnia nisai nanansi ni aia inin ia iani in in in sin inindaidn ianiin n ia inain ins in.
hey shooji mike and kyle,, i got something 4 u, BLAST, who dud how u did dat, a ass pump turkey baster in my ass makes air reflect onto yo dome, u pussy bitch.
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The act of melting down a Madden CD and placing it into a syringe then injecting the hot liquid into one's ass like a steroid injection.
Adam melted Madden for Eric because the game was so garbage. Then Eric bent over and got an injection of Madden. This is Madden Ass Pumping.
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When a dude sticks his long, hard, throbing cock in a womans ass then pulls out and pee's in her mouth.
Hey man, what did you do last night?
I gave this chick a dirty ass pump; it was awesome.
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Person 1: Hey, did you hear what Jason did the other day?
Person 2: No, what'd he do?
Person 1: He was totally pumping ass with Becky.
Person 2 : Goals.
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A term coined by Static Noise Podcast member Matt Chinander. It means the same thing as kick ass. Another variation is "Thrust Butt", coined by fellow podcast member Alex.
Andres: What do you think of Let Yourself Go?
Matt: Very pump ass.
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