AQ vs. overbet - sigh

I guess this play is VERY read dependant but unfortunately I didn't have a read on villian as he had only played about 12 hands with me. About 55/3 or so which doesn't mean much with such a small sample size.

Anyways here's how it went:

Party Poker No-Limit Hold'em, $ BB (9 handed) internettexasholdem.com

Button ($22.95)
SB ($17.37)
BB ($16.90)
UTG ($18)
UTG+1 ($28.60)
MP1 ($28.50)
MP2 ($26.90)
Hero ($75.72)
CO ($12.15)

Preflop: Hero is MP3 with Qc, As. SB posts a blind of $0.10.
4 folds, Hero raises to $1, 1 fold, Button calls $1, SB (poster) calls $0.90, 1 fold.

Flop: ($3.25) 4c, Qs, 4d (3 players)
SB checks, Hero bets $2, Button folds, SB calls $2.

Turn: ($7.25) 5d (2 players)
SB calls $14.37 (All-In), Hero calls $14.37.

River: ($35.99) 7s (2 players, 1 all-in)

Final Pot: $35.99


I couldn't see him playing a 4 like that. I mean, if he has a four, he slowplayed the flop and now he OVERBETS?! That just didn't match up. Maybe a Queen worse kicker, maybe the turn brought him some draw (lol), or most likely seemed to be a bluff.

Would YOU have laid this down?

p.s. I lost, but I won't say to what