AJ v. Murderous Ghouls, flop decision

[mantasm]

I haven't posted a hand in a long while. Here's one. I've been at this table for a few orbits and lost 15BB or so. My image, if I have one, is probably overaggressive.

I have A[img]/images/graemlins/heart.gif[/img] J [img]/images/graemlins/diamond.gif[/img]. UTG, loose and aggressive, limps. I raise on the button. The loose passive BB calls.

Flop: 6.x SB

K[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/club.gif[/img]

BB bets, UTG raises.

What's up?