Standard Fold?

[scotty34]

MP is an unknown, but I can tell already he is a donkey (do you see why?)
CO is around 50/10 over a small sample


PokerStars 2/4 Hold'em (6 handed) FTR converter on zerodivide.cx

Preflop: Hero is SB with T[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img]. MP posts a blind of $2.
UTG calls, MP (poster) checks, <font color="#CC3333">CO raises</font>, <font color="#666666">1 fold</font>, Hero calls, BB calls, UTG calls, MP calls.

Flop: (10 SB) 8[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
Hero checks, BB checks, UTG checks, MP checks, <font color="#CC3333">CO bets</font>, <font color="#CC3333">Hero raises</font>, BB folds, UTG folds, <font color="#CC3333">MP 3-bets</font>, CO calls, Hero folds.

Do you fold this against an unknown idiot? Does CO's calling change your thinking at all?