I'd check/call the flop. There's four people to act after you and if everyone checks to MR. loose/aggressive in late position, he may go all in and try to buy the pot. If every checks on the flop, I'd bet the pot on the turn and hope I get enough callers to justifiy some more callers when I go all in on the river.

Yes, I already know I'm retarded. Please tell me what you actually did.