stars 6m 2/4 soooooted connector turns pair + oesd str8 flush draw

[KKrAAAzy88s]

PokerStars No-Limit Hold'em, $4 BB (6 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">Hero ($509.20)</font>
MP ($250)
CO ($295.45)
Button ($552.90)
<font color="#C00000">SB ($615.90)</font>
BB ($100)

Preflop: Hero is UTG with 5[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/diamond.gif[/img]. MP posts a blind of $4.
<font color="#CC3333">Hero raises to $16</font>, MP (poster) calls $12, <font color="#666666">2 folds</font>, SB calls $14, <font color="#666666">1 fold</font>.

Flop: ($52) 6[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $36</font>, MP calls $36, SB calls $36.

Turn: ($160) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets $184</font> Hero ???

Opponent is pretty laggy. Didn't have PT running as I was sitting at work playing. [img]/images/graemlins/smile.gif[/img] He had been taking down a lot of pots uncontested and I hadn't seen too many of his hands. I figured him for at least top pair or some draw on the flop and I'm pretty sure he was playing back at me, thinking I was on a missed AK or something similar...

what do i do on this turn?