Pulling shapes, is to flirt/makeout/ask out a person. The act of pulling shapes is mainly reffered as a man hitting on a woman, i.e The Shapes are the womans curves, and the man is pulling her in, drawn by his stamina
Man 1: "hey dude, did you pull some shapes with that chick last night?:
Man 2: "Yeah man, it was a good spot for tree's that night, we hooked up"
(Spot for tree's: It was a good night to mix with people)