Play this fast or slow?

[Toonces]

Game is a loose 10-handed $10/$20 home game.
Hero has 6 [img]/images/graemlins/heart.gif[/img] 6 [img]/images/graemlins/spade.gif[/img] in BB. Both opponents play loose-passive pre-flop, but reasonably well after the flop.

Preflop: 1 fold. UTG+1 calls. 1 fold. MP1 calls. 4 folds. SB calls. Hero checks.

Flop (4 BB): J [img]/images/graemlins/club.gif[/img] 6 [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/spade.gif[/img]

SB checks, BB checks, UTG+1 bets, MP1 raises, SB folds. BB ????

Do you check raise or cold call here? Or should I just bet out (something I would do at times with a jack or 6 here)?