tank ass

an ass so large that if you tried to assram it your penis would not penetrate the rectum.

by sonny bono September 06, 2003

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by mesoglea November 23, 2002

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the ass of a person who's sole reason for existance is to be a life support systems for said ass.

by Anonymous February 19, 2003

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Taking a shit with such force that your shit gets stuck to the back of the toilet.

Mann, I ate so much beans, I had tank ass all morning. I tanked so hard I almost ruptured a hemorroid!!!

by hemy January 24, 2008

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A lady's ass that is so flat and wide that it resembles a tank like structure. If she layed down you can use that tank ass for a table.

Slut bend over so i can ram rod your tank ass then eat some butt

by gerbil April 17, 2003

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Ass with marks left from sitting on the tank (toilet) for too long

John-"Dude, you've got tank ass!"
Bruce-"WHY THE F*CK ARE YOU IN MY BATHROOM?!"

by Empty Health Bar August 06, 2004

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