AA vs Huge Flop Overbet NL50

[Shoot59]

villain has been LP 41/6/0.6 over 50 hands

My first thought was this bet smelled like some kind of draw (although that wouldn't fit this villains tendencies so far)...what's your play?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($7)
UTG ($44.40)
MP ($35.30)
CO ($31.50)
Button ($9.90)
Hero ($91.05)

Preflop: Hero is SB with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
UTG calls $0.50, <font color="#666666">2 folds</font>, Button calls $0.50, <font color="#CC3333">Hero raises to $3</font>, <font color="#666666">1 fold</font>, UTG calls $2.50, Button folds.

Flop: ($7) K[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">UTG raises to $41.4</font>, Hero????