having anal sex with a women in the bathtub while she is face down and submerged underwater (her ass must remain submerged aswell)
ana: hey, why do you look so nervous?

lee: i gave some broad the wet basement yesterday, i accidentally killed her though
by mazerrackham May 26, 2012
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The result of one urinating in his or her sexual partner's rectum.
Rico: Cindy is such a whore man! Did you give her a dirty sanchez?

Frank: Nah man, I gave her a wet basement!
by Undertaker418 August 27, 2009
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Wet moldy basements can destroy your home.
I let my wet basement go and my house will never be the same.
by Paul Thornton October 18, 2007
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Damn that fuckin sloppy hooker had the meanest wet basement I ever seen.
by Ricky Kasso May 5, 2009
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New Jersey has the most wet moldy basements in the U.S.A.
Wet basement N.J. is a major problem.
by Paul Thornton October 18, 2007
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The act of shitting your pants while sitting then sliding out of your current position like you’re going down a slide.
Man I was so lazy Sunday afternoon. I had to go to the bathroom, but instead of going I just sat on my couch and gave myself a Wet Basement MudSlide.

Wet basement mudslide meaning: shitting yourself while sitting and sliding out of your position as if you were on a slide.
by Soup kitchen bros August 27, 2022
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Seepage on the interior of a home in Philadelphia.
I have been hit with a philadelphia wet basement.
by Paul Thornton November 7, 2007
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