[bigalt]

I can't conceive of a 3-bet that you're beating here, but perhaps I just don't have the imagination to keep up with some of these guys.

Trips aren't out of the question. I've seen a lot of players check/call, check/call, then lose their resolve and bet the river with big hands. Or he may have just been trying to keep the 3rd man in on the turn.

I think the most likely holdings, though, are a T or a straight. Being a puss and not having any clue how to assign probabilities to those hands I like a call.