Large, fleshy or volumnious buttocks on a woman, attributed to her imbibing beer, malt beverages and other forms of strong waters.

Related term: Beer belly
Check out the beer ass on the tattoed broad near the bar! Whoah! That momma's hot!
by Tummy AuGratin February 24, 2006
WHEN YOU GET THE SHITS THE DAY AFTER DRINKING.
I GOT DRUNK LAST NIGHT AND NOW I HAVE BAD BEER ASS TODAY!
by LIZ LAWSON July 24, 2008

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