Villain gives up the lead

[sharpie]

Villain hasn't played a hand in 25 hands.. I guess I should've folded the flop, but it's tough because it feels so exploitable. Also what if I have AK or KQ? Does the kicker matter?

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($69.50)
CO ($98.50)
Hero ($114.80)
SB ($105.30)
BB ($98.50)
UTG ($98.50)

Preflop: Hero is Button with K[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $4</font>, SB calls $3.50, <font color="#666666">1 fold</font>.

Flop: ($9) 3[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $6</font>, <font color="#CC3333">SB raises to $16</font>, Hero calls $10.

Turn: ($41) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero???

Edit: Also, what if I have AK and he leads the turn?