$27 Bubble w/JJ overpair on flop

[EscapePlan9]

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG (t4285)
Hero (t3300)
SB (t4025)
BB (t1890)

Preflop: Hero is Button with J[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t450</font>, SB calls t375, <font color="#666666">1 fold</font>.

Flop: (t1050) 4[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets t600</font>, <font color="#CC3333">SB raises to t2100</font>, Hero thinks...

I think I was playing with Monsters Under My Bed because I thought he was slowplaying with QQ+ pre-flop, and I folded. Horrible? I went with my gut reaction and folded there without thinking much about the hand. But the more I think about it, the more I think my JJ was best. This doesn't look like a good place to be folding my overpair.