Poontank, a portmanteau of poontang and tank.
Mr. Garrison: "Yeah, I tell you, boys, women can kill. Poontang's expensive. That's why when it comes to chicks, I just screw 'em and leave 'em. I say, ‘Get out of my bedroom, poontank, before you suck my life dry.’"
by natalie portmanteaux June 20, 2021
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A slut that is very fat!!!
That poontank looks like you sister!
by BEAVER EATER March 27, 2007
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Poontank: Variation of poontang relating to size of lady.

A larger lady who dresses in the clothes that would fit a hot female but is repulsive due to her size, desperation and being a bit common.
That poontank had you in her sights, how did you get away!?!
by Thumb April 8, 2007
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1.one who tanks poon, a pussy, a fagball, a fruitwad, a butthole pilot, a cream cheese asswad, an ass clown, Ben Affleck, a queer
2. one who cums too early( Ben Affleck, if he even can, u poontanker)
"Ben Affleck's the biggest poontanker on earth... him and Saddam."
by Rick Shanley August 3, 2003
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Having sex to orgasm with a woman vaginally
WHEN KENNYI WAS FILLING THE POONTANK SO HE WAITED ON THE PORCH.
by neverlad February 11, 2015
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