Mommy, your butt is big.
(sigh) Yes, it is.
My butt is little.
(bracing for it) Yes?
I can put...(demonstrating) three, four, FIVE hands on YOUR butt!
OK. Thanks for the info.
Mommy, your butt is big, and mine is little.
Honey, can we stop talking about my butt?
Ummm...I don't think so.