Yes, be a nice guy. It's her birthday.
Sure. you got the vodka free, anyway.
Sure, because you don't drink vodka.
No, are you insane? She's a user.
Yes, when she gets buzzed she tends to get amorous.
Why not? If all else fails, you can hit it and quit it.
No, she's a nice girl and she deserves better than that.
Screw it...drink the booze yourself.
Regardless, this can't end well.