Nathan: What's this? [patting my backside as I changed Jacob's diaper]
Me: It's Mommy's tushie.
Nathan: Mommy. [again with the patting] What's this?
Me: It's Mommy's tushie, Bud. Is it a big tushie?
Nathan: No. It's a magic tushie.
Me: A magic tushie? Why is it a magic tushie?
Nathan: Because there's poop inside!