more wtf

Okay, so I played this badly, but wtf?

TEXAS_HOLDEM, NO_LIMIT, T4-65066560-30
played at "Stettin" for USD TC from 2008-04-09 23:02 until 2008-04-09 23:04
Seat 2: psychoberger ($5,540 in chips)
Seat 4: Du_baralho ($1,540 in chips)
Seat 7: rodfantini ($1,860 in chips)
Seat 9: Dr Zen ($2,550 in chips)
Seat 10: watt.1000 ($3,510 in chips)
ANTES/BLINDS
Dr Zen posts blind ($50), watt.1000 posts blind ($100).

PRE-FLOP
psychoberger calls $100, Du_baralho folds, rodfantini folds, Dr Zen calls $50, watt.1000 checks.

I have KQs, so I'll see a flop.

FLOP [board cards: 8S 8H KS ]
Dr Zen checks, watt.1000 checks, psychoberger bets $300, Dr Zen calls $300, watt.1000 folds.

He's most likely bluffing, but raising could put me in a tough spot. My hand will be good a lot if I show it down, so that's what I will do. He could also have KJ, but I don't want to gamble.

Probably should have done though.

TURN [board cards: 8S 8H KS 9H ]
Dr Zen checks, psychoberger checks.

Okay. I hoped he would bet again, but that's okay.

RIVER [board cards: 8S 8H KS 9H JH ]
Dr Zen checks, psychoberger bets $500, Dr Zen calls $500.

I am scared that he has KJ, but he can have nothing at all, KT, J9, all of which I beat...

SHOWDOWN
psychoberger shows [ QC TC ]

... or he can have made a runner runner straight.

I mean wtf? I am running out of bizarre ways to lose money.