An unusual and unattractive excessive projection of a female's lower abdomen. Most common in females over forty years of age. Stomach area above the Piss Belly generally remains relatively unaffected.
"Look at the piss belly on her"
by PopeMichael July 21, 2009
When you have so much piss in your stomach that it actually expands. It is like a beer belly but with piss.
when my teachers wouldn't let me go to the bathroom my stomach expanded and gave me a pissbelly. A piss belly is a stomach expanding because you have so much piss in you
by BigSackedLumberJack December 13, 2015