The 7-year-old Katie version of "No shit Dad" (includes a virtual rolling of the eyes).
Works perfectly in any situation where you think the person you're having a conversation with someone who doesn't deserve your respect, but you know better than to come right out and call them an f'ing idiot. Now why would a 7-year-old want to call her dad an f'ing idiot? Hmmm ....
Dad: "Katie - did you brush your teeth?"
Dad: "Katie - did you clean your room?"