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Similar to a one night stand. One who purposely fornicates with another, while not intending to see them in the future. Like a conquest.
Chad: "Dude, I scored a hot piece of ass last night!"

Ken: "What, is she like your girlfriend now or something?"

Chad: "Naw man, it was just a pump and dump scenario. I've got a date with Buffy tonight."
by Angela Wallenbrock, MD November 02, 2007
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one night stand

When a man has sexual intercourse with a woman, and then breaks up with her (if they are in a relationship) or never speaks to or makes contact with them again after the aforesaid act.
Tom:- Did you go to that party last night?

Ollie:- Yeah, I did that fit girl from Wells Hall. She was so good. She know's how to f**k.

Tom:- Did you get her number?

Ollie:- Naa, I just pumped and dumped her. What's her name again?

Tom:- You're such a man slag. You allways pump and dump
by Master of Definitions January 23, 2006
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To pump and dump a load in a hot hole and leave. Usually referring bareback sex (anal sex without a condom). A breed and bail
Dude, up for a pump and dump?

That would be great... have a few before work
by rawfcknpig January 16, 2010
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To pump a stock that you own and dump it when the price goes up.
Stay away from QBID it is a pump and dump.
by Fred Silvia September 10, 2005
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When your wife/girlfriend is breast feeding your newborn and your balls deep in her.
Last night when I was ready to go Charleen was giving the baby the boob, so I went to work and gave her the pump and dump
by The Operator July 24, 2018
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A fast, unprotected sexual meeting between two gay men, where the top "pumps" the bottom and "dumps" his ejaculate inside the receiver.
I need to get off, know anyone up for a quick pump and dump?
by LChamp December 08, 2006
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