check raised with KQ on a K board by a super loose/bad player

[sdplayerb]

villain is 56/22/2.1 and i just saw him go far in a hand raising with A7 utg, calling a reraise from the button then going pretty far on an Ace high board.

Poker Stars, $0.50/$1 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

BB: $78.95
UTG: $72.70
MP: $125.25
Hero (CO): $136.45
BTN: $115.20
SB: $72.75

Pre-Flop: Q K dealt to Hero (CO)
2 folds, <font color="red">Hero raises to $4</font>, BTN folds, SB calls $3.50, BB folds

Flop: ($9) 7 K[img]/images/graemlins/heart.gif[/img] 5 (2 Players)
SB checks, <font color="red">Hero bets $6</font>, <font color="red">SB raises to $12</font>

Thanks

SD