KK of wusses on button??

Been at table for 30 minutes. Villains are both somewhat loose , not too aggressive.

Party Poker No-Limit Hold'em, $ BB (6 max, 5 handed) FTR converter on zerodivide.cx

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

SB ($23.05)
BB ($28.19)
UTG :#A500AF(villain)/ ($31.56)
MP ($19.68)
Hero ($36.65)

Preflop: Hero is Button with K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $0.10.
<font color="#CC3333">UTG :#A500AF(villain)/ raises to $1</font>, MP calls $1, <font color="#CC3333">Hero raises to $3</font>, <font color="#666666">2 folds</font>, UTG :#A500AF(villain)/ calls $2, MP calls $2.

Flop: ($9.35) 3[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
villain checks, MP checks, <font color="#CC3333">Hero bets $4</font>, villain calls $4, MP folds.

Turn: ($17.35) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">villain bets $4</font>, Hero ???

Pot: $21.35

Comments please.