A prostiteen is a teenage girl who dresses scandalously, similar to a prostitute of an older age. They are certainly not as "affectionate" as an actual prostitute, but they dress very similarly.
Be careful not to stare at girls you see walking down the street. Most of the time, they turn out to be prostiteens, and you'll just feel dirty.
A cockabler is one who is actively trying to get his buddies laid. The opposite of a cock-blocker.
"Yeah, I hooked up with that chick that Cole set me up with. I love that guy, he is such a cockabler."