Acting on a tell in a big pot

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2 terrible limpers and I raise red JJ from the HJ. Bad/loose/passive/gambler cold calls from the Button, SB folds, BB calls, limpers call.

5 to the flop of:
K [img]/images/graemlins/heart.gif[/img] K [img]/images/graemlins/diamond.gif[/img] 5 [img]/images/graemlins/heart.gif[/img]

Checked to me and I bet. Button asks the dealer if it was checked to him, dealer has to point to my bet, then he just calls. A friend of mine who's been playing poker for a living for a long time once said this is one of the most reliable indications of strength. 2 players over-call.

Turn blanks off. Checked to me and I bet intending to insta-fold if the button raises. Pot is too big and our information is too unreliable to run another line, right?