Your kids are lying to me

I've been babysitting more than usual lately. The kids are all different in age in personality, but there is one thing that ties them all together. It is the four words they LOVE to start sentences with while I'm there. "My mommy lets me..." It is always followed by a quite obvious lie. "My mommy lets me eat ice cream in bed." "My mommy lets me stay up until midnight." It usually happens that I just have to play along with the little liars and say "well, guess what? I'm not your mommy and I say we don't take all of the food out of the refrigerator and lay it out on the living room floor."