Fold KK on the flop after aggression

[ama0330]

Yowza. I cant fold this.

Its true that the range of hands some villans can hold here is pretty tight, but even if he does have QQ here, calling this bet sends a pretty strong message to the table - "dont even try to [censored] with me in 3bet pots because im not going to fold my overpair" which means that people are gonna tighten up vs you when the bets get big.

Thats great news for you because you can start 3betting a little more liberally, and when someone does play back at you in a 3bet pot, you can just fold your marginal hand without too much difficulty.