Okay, so I knew this would get your attention. Just a quick little story to share. Last weekend my mom, Calvin, Luke, and I were driving home from my sister's house. Out of the blue, Calvin pipes up from the back seat "Mommy, does Luke have a penis?"
He chuckles. "I knew that. Because Luke is a boy. I'm a boy and I have a penis and Grady has a penis." (Keep in mind, my mom is in the car)
He pauses for a few seconds. "And my daddy has a BIG penis"