NL 1/2 - TP and OESD to pot-bet with 5 behind

[Burdzthewurd]

NL 1/2 7-handed at the moment

CO likes making big pots preflop, no other reads on him or others. Everyone has $200 or more behind. Is this a call/fold or pot-sized raise (though that seems awful with that many behind us, I think?)

3 limps, Hero limps button with 8[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/club.gif[/img], Button raises to $4, everybody calls, seven to flop (!)

Flop 8[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/heart.gif[/img]

SB checks, BB checks, UTG checks, MP checks, CO bets $28, Hero?