Awkward moment #1 in Florida

I love my roommate to death. Although sometimes she may get on my nerves and I think her guy logic is the same as the size of a pea in an Elephants head, but you know... anyways. She has this guy that she's "kind of seeing". He's 28 or so years old and he still runs around the beaches of Florida in a Superman Speedo because he thinks it's funny. Although he does make a large sum of money at his job, is a "good old Christian boy," and is smart.... he's a TOOL! He comes into my room where, since we still have no beds or furniture, I am sitting on the floor watching a TV show on Callie's computer because my charger died yesterday right before my test (extremely amazing luck I have). I am sitting knees up, bottom on the floor, upright, and with my arms wrapped around my legs. He proceeds to come in and wrap his legs & arms around me and snuggle his head in. All of the sudden he begins to BLOW on my ear! WTF! I figure, oh well maybe if I give him the satisfaction of a laugh maybe he'll go away, bc my awkwardness is not helping, only feeding it at this point. NOTHING. The laugh did NOTHING to help my case. What would you do in this situation. Then she comes in, chucckles, and goes "AWWW" ... then WALKS AWAY. Dear Lord! If my boyfriend (hypothetical, clearly) did this, I would be like "uhhh, you're weird and we're done... creep."

What would you do?!