Acronym for "random ass slut". If a place is inhabited by a number of RASs such as Spring Break, it is said to be RAS-infested. A great and effective way to eliminite this problem is through the use of any household RASticide (i.e. Nuggets) found in your local corner store. A great way to talk about slutty girls without them knowing it. Stupid RASs.
Dude, check out that RAS. She's giving Travis head in the middle of the dance floor.