A sump pump is a pump used to remove water that has accumulated in a sump pit.
My old sump pump is too loud!
by Paul Thornton November 6, 2007
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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
by Mike adorno a.k.a Creep May 23, 2008
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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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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!
by BigSump69 November 24, 2022
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One of Trumps many sycophantic white house staff, who get such a raging boner from his position of power they basically act like he can do no wrong and will defend his position at the cost of everything; behaving like a simp only much worse, hence the term Sump.
Mitch McConnell: "Dude it's been almost 5 minutes and no-ones licked Trumps asshole! Where the hell is Seb Gorka?"

Mike Pence: "Nah, he's gone bro! Trump fired him, he was way too much of a Sump!"
by GatorBoy96 August 9, 2020
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Girl: “My boyfriend is ignoring me.”

Friend: “Did y’all get in a argument or sump?”
by Janessaa April 9, 2020
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