an ass so large that if you tried to assram it your penis would not penetrate the rectum.
by sonny bono September 7, 2003
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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 25, 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 6, 2004
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