KK in deep trouble

[tozzy]

Party Poker, $3/$6 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

Hero (CO): $1,205.50
BTN: $498
SB: $2,475.14
BB: $542
UTG: $2,191.40
MP: $1,414.40

Pre-Flop: K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img] dealt to Hero (CO)
UTG folds, <font color="red">MP raises to $21</font>, <font color="red">Hero raises to $66</font>, 3 folds, <font color="red">MP raises to $250</font>, Hero calls $184

Flop: ($509) A[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/heart.gif[/img] (2 Players)
MP checks, Hero checks

Turn: ($509) 6[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">MP bets $250</font>, Hero calls $250

River: ($1,009) 2[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">MP bets $914.40 and is All-In</font>, Hero folds

Results: $1,009 Pot
MP mucked and WON $1,919.90 (+$1,419.90 NET)

Villain is Kowaino, one of those 19/15/3 nits.

I hate my play, but what else?

[Trivial]

any history?

[FionnMac]

ez fold, if he had air he'd bet the flop every time.

wtf at his pf 4-bet size, not seen anything like this from this guy before.

[CrazyIvan24]

He might actually have AA here.

[tozzy]

no recent history im afraid. hes just a nit and i had position on him, so no, nothing all too remarkable.

[AAismyfriend]

I would just fold the turn. He's going to try and check down QQ/JJ/KK, and it's very reasonable he's checking AK/AA on this flop.