50NL - KK paying off river on scary board

[Willem]

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

MP ($72.30)
Hero ($65.20)
Button ($49.25)
SB ($49.50)
BB ($20.50)
UTG ($41.85)

Preflop: Hero is CO with K/images/graemlins/spade.gif, K/images/graemlins/diamond.gif.
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, SB calls $1.75, <font color="#666666">1 fold</font>.

Flop: ($4.50) 2/images/graemlins/heart.gif, 5/images/graemlins/club.gif, 9/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $2.8</font>, SB calls $2.80.

Turn: ($10.10) 6/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $7</font>, SB calls $7.

River: ($24.10) 4/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $18</font>, Hero calls $18.

Final Pot: $60.10

Results in white below: <font color="#FFFFFF">
SB has 4c 4d (three of a kind, fours).
Hero has Ks Kd (one pair, kings).
Outcome: SB wins $60.10. </font>

I called because I was curious about his hand. Until the river I had the feeling he just didn't believe me. On the river I had the feeling I had to pay off here. Looking back now the call just seems stupid.

Should I have bet more on flop/turn?

[renotime]

you played the hand perfectly and got very unlucky

i can't really put him on a backdoor flush or 3 7 b/c it is complete trash and you raised preflop

i might have actually raised on the river trying to rep the backdoor flush but that would depend on your table image
and at these limits it's probably negative ev

i might have overbet the turn trying to make it look like a bluff if you think he didn't believe you

i like the call on the river even though most of the time you are beat

[mrw8419]

Bet more on flop and turn, if villain is passive fold river.

[kurto]

The most important question is did you buddy list him? Definitely take notes and look for this guy.

I find it pretty difficult to find people who will call down 2 streets with a pair of 4s unimproved and no draws.

That guy is a gold mine.