Facing overbet flop push with AA

[linuxrocks]

Villian is running at 45/11/4. He is playing many pots but playing them reasonably well. I think he falls under the category of average fish who might play very well on a particular day because of confidence, alcohol whatever. Haven't seen him before, so seems like a weekend warrior.

PokerStars No-Limit Hold'em, $4 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($260.80)
BB ($524)
UTG ($574)
linuxrocks ($411.20)
CO ($430.40)
Button ($390)

Preflop: linuxrocks is MP with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">linuxrocks raises to $12</font>, <font color="#666666">2 folds</font>, SB calls $10, BB calls $8.

Flop: ($36) 7[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">BB bets $512 (All-In)</font>, linuxrocks ??