low set on dry board, unreasonable line from villain

[liverdracon]

Full Tilt Poker - No Limit Hold'em Cash Game - $2/$4 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $687.60
BB: $425.00
Hero (UTG): $691.35
MP: $433.50
CO: $157.60
BTN: $394.00

Preflop: Hero is dealt 3[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/heart.gif[/img] (6 Players)
<font color="red">Hero raises to $16.00</font>, MP folds, CO calls $16.00, 2 folds, BB calls $12.00

Flop: ($50) 3[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/spade.gif[/img] (3 Players)
BB checks, <font color="red">Hero bets $38.00</font>, <font color="red">CO raises to $76.00</font>, BB calls $76.00, Hero calls $38.00

Turn: ($278) Q[img]/images/graemlins/club.gif[/img] (3 Players)
<font color="red">BB bets $67.00</font>, Hero calls $67.00, CO calls all-in for $65.60

River: ($477.60) 2[img]/images/graemlins/diamond.gif[/img] (3 Players - 1 All-In)
<font color="red">BB bets all-in for $266.00</font>, Hero folds
Uncalled bet of $266.00 returned to BB

Pot Size: $477.60 ($3 Rake)

Co is an idiot and quite unimportant in this hand
BB: looks like an normal tag on 5k hands, no histoy yet, but 8 flop aggression. Played like 20/18/5

Me: 22/17/4

The coldcall from BB on this made me suspicious on such a dry flop. I can´t see him doing that with overcards, nor an overpair. Twopair seems nearly impossible.

Am I beat by higher set? Or what else would he play like this?
Anyone folds to the smallish bet on the turn?