NL25 TPTK On Flop vs. Huge Overbet

[andrew484]

Not sure what to do here on the flop. The player is kind of loose and not overly aggressive, and I have not seen him do anything like this yet in my session. What would you do?

Full Tilt No-Limit Hold'em, $0.25 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($27.75)
Button ($36.50)
SB ($32.25)
BB ($22.20)
Hero ($23.85)

Preflop: Hero is UTG with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises to $0.85</font>, MP calls $0.85, <font color="#666666">1 fold</font>, SB calls $0.75, BB calls $0.60.

Flop: ($3.40) T[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">BB bets $21.35 (All-In)</font>, Hero ...