Jesus man. First of all Jason kidd beat his wife. So that's funny. Cuz i hate jason kidd. I want to tie him down and let his big headed son beat him.
Anyhow, a wife beater is a friggen Tank top undershirt. What is so hard to understand.
Its a NICKNAMe because it's the type of shirt you see all the Wife beating hicks on Cops wearing, if they're wearing a shirt at all, and it's not a ratty Tshirt with a nascar logo or a wrestler on it.
The end.
Oh, i think they're also called italian undershirts or something. Go tony soprano. Yipeeeee