K4o flops two pair... line check
 

Villain is typically loose passive shortstack donk

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $251.45
Hero (BB): $115.50
UTG: $58.25
MP: $9.20
CO: $70.50
BTN: $44.50

Preflop: Hero is dealt K[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/heart.gif[/img] (6 Players)
3 folds, BTN calls $1.00, SB folds, Hero checks

Flop: ($2.50) K[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $2.00</font>, BTN calls $2.00

Turn: ($6.50) 5[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $5.00</font>, <font color="red">BTN raises to $15.00</font>, Hero calls $10.00

River: ($36.50) A[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets all-in for $26.50</font>, Hero folds
Uncalled bet of $26.50 returned to BTN

Pot Size: $36.50 ($1.80 Rake)

Re: K4o flops two pair... line check
 

Your most likely behind on the turn to the FD that hit...