Basically just a fat ugly girl.
Also a fat ugly girl that is cranky and thinks she is smokin hot.
Most of the time, a bowser is the disgusting obese friend(girl) that tags along with a mega-hottie.
Man 1: "Duudee! You see that hottie over there?!?! I HAVE to hook up with her tonight!"
Man 2: "Ya man but look at her friend. If you get with that Dime, that means im stuck with the bowser!"
The next morning...
Man 2: "Fuck mann! You owe me BIG TIME!!!
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