KK against loose, loose players

[incognito]

$3/$6 online, 9 handed.

Two limpers to my right, I raise in middle position with K [img]/images/graemlins/spade.gif[/img] K [img]/images/graemlins/club.gif[/img], cutoff folds, button calls, blinds fold.

The flop comes A [img]/images/graemlins/heart.gif[/img] 8 [img]/images/graemlins/diamond.gif[/img] 6 [img]/images/graemlins/diamond.gif[/img] and it's checked to me.

Obviously I hate the ace, but all three of my opponents are AWFUL, and could have anything. Further, they could call here with as little as an 8.

So I bet and everybody calls.

Turn comes T [img]/images/graemlins/spade.gif[/img].

Checked to me, I bet and lose one limper.

River comes 5 [img]/images/graemlins/spade.gif[/img].

Checked to me, I bet, button folds, remaining limper raises. He's the worst of the bunch and could have made it to this point with absolutely ANYTHING. Do I call getting 11:1, or do I fold? And how was my play up to now?