NL10: another blind v. blind hand

[appears]

Villain's stats: 21.05/8.77/7.33/114. I'm not sure what the flop overbet means. Is folding the flop weak-tight, or wise considering that two large bets are likely to follow? K8 beats only a bluff, but the unusually large bets seem to make a bluff more than likely.

$0.05/$0.1 No Limit Holdem
5 players
Converted at weaktight.com

Stacks:
UTG (<font color="#0000cc">$6.15</font>)
CO (<font color="#0000cc">$19.65</font>)
BTN (<font color="#0000cc">$8.25</font>)
SB (<font color="#0000cc">$9.60</font>)
Hero (<font color="#0000cc">$11.85</font>)

Pre-flop: ($0.15, 5 players) Hero is BB 8[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img]
<font color="#777777">3 folds</font>, SB calls $0.05, Hero checks

Flop: 9[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/diamond.gif[/img] ($0.2, 2 players)
<font color="#cc0000">SB bets $0.4</font>, Hero calls $0.4

Turn: 6[img]/images/graemlins/spade.gif[/img] ($1, 2 players)
<font color="#cc0000">SB bets $1</font>, Hero calls $1

River: A[img]/images/graemlins/spade.gif[/img] ($3, 2 players)
<font color="#cc0000">SB bets $4.1</font>