[Lmn55d]

well button's range at this point is probably 88, TT, JJ, AK, AcJc, AcTc, Ac9C, KcJc, or maybe a hand like QJ that he didn't want to push too hard. I don't think he is bluffing and he is probably checking behind with 88, TT, and JJ and betting the QJ. I don't think he's calling with AK here, so against him you probably should check and hope he checks behind with a better hand or bluffs his busted king high draws.

However, BB is in the hand and he could easily have a 6, 2, 33/44/55 or call with an ace. He also seems like the type of player who might bluff at the pot, though. Overall, I think you need to make sure you get value from him. You aren't losing much to button.

I bet.

EDIT: If you feel that you can fold if it goes bet/call it would add value to checking. I'm not sure that you can though since button might know BB is a donk and call with a big ace or his 88. Obviously you can fold if it goes bet/raise, but this won't happen very often. I still bet.