Oh Dude, As much as you might want to trust your kids with any secret you can be sure as the wind blows that they will out you without a second thought or even knowing they did it. Also, Never and I mean never pull the "this is our little secret" card or "don't tell mommy" card. Not only will they rat you out for whatever you are trying to keep a secret but they will then unknowingly make you the head of a full on marital conspiracy. Kids innocence is a wonderful thing. Don't ever forget it. lol