Not being a guy, my guess is that he's trying to get your attention by any means possible, even if he has to be a jack-a$$ to do so.
If you and he talk, you can tell him (if it's true), that you like him okay so it's not necessary to do the other things in order to gain someone's attention. Tell him to just be himself and he will have more friends that way.
Your question is one that is age old. The bible says at Pro 30:18,19 "There are three things that are beyond my comprehension, and four that I do not understand: The way of an eagle in the heavens, The way of a serpent on a rock, The way of a ship in the open sea, And the way of a man with a young woman.
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