[foobar37]

Wow, very few hands make sense here given he checked behind on the turn. For hands that beat you I can only really see QQ and 77, but for hands that you beat I can only give him AcXc that floated the flop and checked behind the turn because it picked up outs. No other hand really makes sense, although with only 30 hands of history he could just be playing the hand strangly. Still, I think a fold is in order.

Actually, now that I think about it, AK is not that unreasonable for some players, but those same players could also show up with AQ. I still fold.