When object a destroys object b in one swift motion.
Guy 1: What the fuck bro?!?

Guy 2: What happened man?
Guy 1: This no skin just one pumped me in Tilted Towers.
Guy 2: Bro that sucks.
by Stealthtaco August 3, 2018
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beginng and finishing the act of coitus with one pump
by Cheese2968 August 10, 2008
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act of busting after one thrust of erect dick in wet vaginal canal
Danny was planning on having hot sex till the morning sun, until he ruined the night by one pumping
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when an attractive girl is so hot, that if one were to grasp one's penis firmly, one could only hold their load for a single pump.

part of a rating system, one pump being the most dime babe you'll ever find,

not to be confused with no pump or two pump
Guy 1 - 'daaayumm! check that babe out! hands down, she's a one pump'
Guy 2 - 'truuuu! she's dimee'

Guy 1 - yooo, check her outt
Guy 2 - she's defs a one pump..
Guy 1 - get on that, bro
Guy 2 - chea right, it's hard enough for me to get with a two pump !
by millarke March 1, 2011
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Verb: When a man gets a hand hon and cums in one stroke
Did you hear what Shelly did to John?
Ya, she one pumped him!
by The One Pump Chump January 30, 2018
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A mighty hero capable of making the ladies orgasm in just one pump. His ruthless training regime consists of: 6 Nans an hour, 24 hours a day, 365 days a year, and 366 days on leap years.
"ONE PUUUUUUUMMMPPPPP"
"Wow Levis, you really are One Pump Man!"
by Funnyneck January 28, 2017
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After pulling out of their sexual partner, the jizzer strokes their phallic member one time before unleashing the gates of cream onto their partners back.
"How was the sex?" "I did a One Pump Shotgun right onto her back man."
by One-Pump-Shotgun January 2, 2017
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