A skanky, nasty, BIG, ugly, girl who get freaky with 3-5 guys at the same time. She ruins relationships that were already in trouble.
A bagerta is also a girl who is way on the skanky that get a lot of sex and you don't know why because she is FUGLY!
Dang, man, look at that bagerta over there!
-I know man, I still bang her though.