A Female who has a boyfriend but a sex buddy on the side.
G1-"chantell's still with mark but has damien on the side . . get it???"
G2-"DAMN I DIDNT KNOW SHE WAS A SKEEZER LIKE THAT???!!!!!"
A female that is slutty or otherwise undesirable.
P1: Wow, check out that chick.
P2: No dude, that chick's totally a skeezer.
P1:Hey there's supposed to be a new girl at work today.
P2:Yeah, I saw her dude, definitely a skeezer.