a top chick
A top chick is a girl who doesn't care if you're barely standing and still wants you to flirt with her.
'I just came off a 12-hour shift and you're still trying to get me to text your ex?'
'You're drunk and I'm still talking to you. That's a top chick.'
'He passed out on the couch and she still called him a legend. That's a top chick.'