[NSFW] Johnny is in sex-ed class...

...and the teacher draws a diagram of a penis on the board. She turns and asks the class, "Does anyone know what this is?" Johnny's hand shoots up and he says, "Yeah, I know! My dad has two of them!" The teacher gives Johnny a quizzical look and asks, "Are you sure?" "Yep," Johnny says with confidence. "He uses the little one to pee, and he uses the big one to brush the babysitter's teeth!"