100NL: AQo v unknown. call or fold to weird overbet?

[Montezuma21]

Party Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $99.00
BB: $152.01
UTG: $62.90
MP: $107.00
CO: $94.34
Hero (BTN): $134.26

Reads: <font color="blue">Villain is a complete unknown and has just sat down. call or fold?</font>

Preflop: Hero is dealt A[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/club.gif[/img] (6 Players)
UTG calls $1.00, MP folds, <font color="red">CO raises to $2.00</font>, <font color="red">Hero raises to $8.00</font>, 2 folds, UTG calls $7.00, CO calls $6.00

Flop: ($25.50) J[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/club.gif[/img] (3 Players)
<font color="red">UTG bets all-in for $54.90</font>, CO folds, Hero?

[Suwalski]

If he has just sat down, i assume he post blinds OOP? (clearly a donk). Furthermore he's shortstacked.

I call.