Unknown opponent, horrible flop....call or fold?

[Mackerel]

Very loose game, lots of raising and calling with questionable hands. BB just sat down, I know nothing about him. Feel free to comment on the pre-flop re-raise, but I felt like I was very likely the best hand here. I'm more interested in the flop. Do you call or fold here?

Paradise Poker No-Limit Hold'em, $0.25 BB (10 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

saw flop|<font color="C00000">saw showdown</font>

MP1 ($49.50)
MP2 ($17.75)
MP3 ($10.00)
Hero ($86.50)
Button ($19.25)
SB ($42.25)
BB ($10.00)
UTG ($40.00)
UTG+1 ($7.75)
UTG+2 ($30.00)

Preflop: Hero is CO with J/images/graemlins/diamond.gif, J/images/graemlins/spade.gif. MP3 posts a blind of $0.50. SB posts a blind of $0.25.
UTG calls $0.50, UTG+1 folds, UTG+2 folds, MP1 folds, MP2 folds, <font color="CC3333">MP3 (poster) raises to $1.25</font>, <font color="CC3333">Hero raises to $4</font>, Button folds, SB (poster) folds, BB calls $3.50, UTG calls $3.50, MP3 calls $2.50.

Flop: ($16.25) K/images/graemlins/heart.gif, K/images/graemlins/club.gif, Q/images/graemlins/diamond.gif <font color="blue">(4 players)</font>
<font color="CC3333">BB bets $6</font>, UTG folds, MP3 folds,

[schwza]

reraise is fine if people are raising weak hands. fold the flop.

[Mackerel]

Thanks for the reply schwza, at least that makes one /images/graemlins/crazy.gif.

I actually thought it was an easy fold, but after the hand a self-appointed table expert started berating me, saying that anything worth a reraise preflop was worth the $6 call after everyone else passed. I think that is an idiotic argument, but a couple other players chimed in, in agreement. One player in particular, who I've chatted with on the side a couple of times, IM'd me to ask me what I had. I told him, and he said he thought it was a bad fold too. I told him that I didn't want to discuss it then, but I'd post it here and he could make his case (he says he's a lurker but hasn't posted). I guess he doesn't want to after all. I can only assume by the lack of comments that nobody else thinks it's a close decision either.

If you held A's, would that sway your decision?

[cornell2005]

preflop: whatever.
flop: very easy fold. his arguement is horrible, and shows a lack of poker understanding.