Party Predator
A party predator is a horn dog who goes to a party and preys on innocent people. He'll do whatever he can to get them intoxicated so he can take advantage.
The senior Ronnie went to a freshman after party and got mandy so drunk, then they went upstairs and did the nasty but when she woke up the next day, he was gone and she didn't even remember the night, what a party predator !