If you're sober (or at least still coherent), it's certainly wrong to take advantage of someone who's intoxicated. I was at a party once where this drunk chick kept trying to hook up with me. About 10 minutes later, she was passed out on the floor and had to be taken to the hospital. It would definitely be rape at that point if someone sober were to get with her.
Poor girl didn't know what she was doing. Never binge drink; it takes away your better judgement and leaves you vulnerable to any dude looking to get laid.
Also surfings is a cunt