A sump pump is a pump used to remove water that has accumulated in a sump pit.
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someone who fucks someone else in a sump with the girls head in the dirt and while you talk to your best friend at the same time
Yo that bitch is a sump fucker
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See "New Jersey soap pump", except the aforementioned soap pump is reciprocated by the pumpee to the pumper using the the pumper's semen as lubricant for the sump pump.
Mike 1: Dude my hands are so cold, I could really go for a New Jersey sump pump right now, would you mind initiating with a New Jersey soap pump and I'll complete the process?
Mike 2: Sure man!
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The act of the slurping semen and dirty bath out of the bottom of a shower/bathtub after another person masturbates while taking a bath.
I still canβt believe Oliver Saltburn Sump Pumped the tub after Felix was done taking a bath
Large Beer Belly, huge stomach
Person 1: Wow bro, you have a huge SUMP!
Person 2: Thanks bro, took a lot of years, kfc, McDonald's and Jack Daniels to gain this SUMP!