Conversation with Alex

Alex: Mommy, I pee peed in my pants

Mommy: Well, you better go change

(Alex goes to his room and comes out with a new pair of shorts)

Mommy: Um...Alex....did you change your underwear too?

Alex: My underwear was not wet.

Mommy: So...um...how did your shorts get wet and your underwear manage to stay dry when you pee peed?

Alex: Um ....I better go change my underwear.

Mommy: Good idea.