Flopped two pair on a very coordinated board

[Kyriefurro]

Villain is a semi-intelligent LAG (50/14/3). He's made some mistakes, but seems capable of reading the board. He loves to take advantage of perceived weakness and run people out of pots on scary boards, but he'll also fold to aggression if he's weak.

Party Poker No-Limit Hold'em, $ BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($53.37)
BB ($67.50)
UTG ($67.50)
MP ($52.35)
Hero ($49)
Button ($3.05)

Preflop: Hero is CO with 9[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.25.
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, SB (poster) calls $1.75, <font color="#666666">1 fold</font>.

Flop: ($4.50) T[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $4</font>, <font color="#CC3333">SB raises to $15.57</font>, Hero......?

Now, normally a two-pair hand like this is pretty strong (Brunson notes it's almost as strong as a set, since it's so well hidden), however, this board is pretty threatening. It's possible I'm completely crushed. And the one BIG difference between two-pair and a set is that two-pair has a LOT fewer ways to improve, so if I'm behind, I'm pretty much screwed.

So...what's my line?

[cbloom]

I don't think I can fold this against a LAG. You have position so I'd probably just call and shove the turn when he leads. If the turn is a club or a straight card I'm gonna puke but probably still put it in.