3/6 TPGK What do I do when everyone calls on the flop?

[MexKrax]

Button is pretty LAGy 65/28/1.5. UTG and SB are both loose and passive, around 60/5/0.7.

Party Poker 3/6 Hold'em (6 max, 6 handed) pokerhand.org hand converter

Preflop: Hero is CO with Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, Hero calls, <font color="#CC3333">Button raises</font>, SB calls, <font color="#666666">1 fold</font>, UTG calls, Hero calls.

Flop: (9 SB) Q[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, SB calls, UTG calls, Hero?

I bet the flop, hoping that the button would raise and SB and UTG would both fold. Obviously that plan didn't work out so well. I think I have the best hand here a fair amount of the time, but after all the cold-calling on the flop I'm a little lost.