No, but it's not to prematurely cream my pants either, put out a c-bet to non-thinking players, who then fold all around. So I win a smaller pot instead of letting someone build it for me when I have little chance of losing anyway. If I wait to the turn to bet, then I win at least the same amount as if I bet the flop and everyone folded, while giving someone the chance to catch a card and think they are ahead. We are only worried about 2 cards in the deck falling (two 5s) It is highly unlikely that AA/KK do not reraise PF. I just don't see how checking is that much worse than betting when you have 2nd nuts...at least against non-thinking players. I agree if you have good players at the table, then check/call-check/raise is transparent....