My 4 yr old's favorite phrase right now is: tooty butt. Absolutely everything is a tooty butt. He sings it in the car, he calls his sisters tooty butts, he called me a tooty butt face at once point. I believe he sings it at preschool too. The teacher says have patience, it is just a phase, and they give redirection/time-out style corrections in class, but it is driving me crazy! I'm on the verge of resorting to my mother's old method of washing out your mouth with soap, but I don't think that would have any impact.

I tried the whole 'potty talk is for the bathroom', which worked great on his older sisters when they were in a similar phase, but this lil guy is completely immune to such things. Going to try the suggestion to avoid emotion (probably impossible for me), but maybe that'll work. Hope you have good luck!!