I wish I could take credit for this one, but my roommate who is not familiar with the PUA world but does well with ladies pulled a move I really like. His mane is John, John was being a bitch all semester because there was a HB 9 he was really into but had barley talked to. Last day of the semester he decides its about time to get his shit together and get her number. Being a smart dude he finished his test quickly. Then John just sat in his seat (two rows in front of his target) and stared at the wall waiting for her to finish. After about 15 minutes of this the awkward professor walk up to him and says "What are you doing, you test looks done, why don't you leave? Your not helping someone cheat are you?"

John looks at him casually and says "No, I am just waiting for her to finish (he turns around and points at his target) so I can ask her for her number" he says this loud enough for the whole class to hear. Everyone giggles and the girl blushes. The professor is dumbstruck makes a weird noise and then walks off. When she finishes he follows her into the hallway, scores her number and now they are dating and really into eachother.

I love this one, not the kind of thing you can easily reproduce but it worked well.