KK on QQ2 flop

[The_Good_Dr]

4-8 Live at Hawaiian Gardens. Just sat down and do not recognize anybody.

EP2 limps, folded to me in CO and I raise with K [img]/images/graemlins/heart.gif[/img] K [img]/images/graemlins/diamond.gif[/img]. Folded to BB who calls.

Flop (5 SB): Q [img]/images/graemlins/spade.gif[/img] Q [img]/images/graemlins/heart.gif[/img] 2 [img]/images/graemlins/spade.gif[/img].

BB bets, EP1 calls.
with 7 SB in the pot, what should I do and why?