station designed only for gasoline, taking shits in the bathroom, and nothing else (not even peeing)
"Where's the nearest pump and dump, I need to poop and I'm on empty"
by Dick Sunshine August 24, 2006
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When you and your girl are banging and midway have to poop. So you are sitting on the toilet in missionary, pooping together. The Pump and dump.
Last night Cindy and I were so drunk after B Dubs, we had to Pump and Dump afterwards.
by Catastrophic ASS Blaster July 31, 2016
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The desire to partake in anal fornication.
Man- "Aww that chicks hot!"

Me- "Yeah I'd like to pump that dump...all day pump a dump."
by Tha bratz October 6, 2010
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To syphon diarrhia out of a toilet
Guy 1 "dude i was dump pumping my toilet super hardcore last night" guy 2 "thats nasty was it plugged" guy1 "yeah"
by Nick the freshman June 19, 2011
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When one experiences repetitive, explosive episodes of diarrhea with ones innards pumping out wet, watery feces with seemingly no end in site. The minute one thinks their are done the dump pump returns.
Roger won't be partying with us tonight. He's still hung over from last night and he's been a dump pump all day today. His pucker ring is tender to the touch.
by Eaton Holgoode November 11, 2015
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When you and your girl are banging and midway have to poop. So you are sitting on the toilet in missionary, pooping together. The Pump and dump.
Last night Cindy and I were so drunk after B Dubs, we had to Pump and Dump afterwards.
by Catastrophic ASS Blaster July 31, 2016
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Another way to describe pulling out during sexual intercourse.
I took a girl home last night who wasn't on the pill so I had to do the ole pump n dump on her back.
by The Real Wiz 76 July 16, 2016
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