Quote Originally Posted by ChezJ
once the pot becomes substantial, your goal should be to take it down immediately. milking it for more money is just inviting trouble.

from theory of poker, pg 68 (this is about AA but the concept also applies to KK): You've made a small raise, four of five people have called, and now someone puts in a substantial reraise. You must reraise again even if your play gives away your hand completely. It is worth dropping all disguise because as the pot gets larger and larger, what's in the pot right now counts more than potential bets on later rounds. With two aces you should put in all the bets you can.
this is different IMO. small raise is kind of an opinion. 3 on a .50 big blind is a larger than normal, preflop raise. The standard is usually around 2 in an un-raised pot. No one else called it either. This says 4-5 callers.

So that means this pot has 3.75 in it. I still think just getting another call out of him preflop is best.