Underpants

Big bro Machoke, why do you wear underpants?

It means becoming an adult, maybe.

Hey, even a kid wears underpants.

You don't have underpants, that's hair.

No way!! These aren't fluffy underpants!?

I've been exposing my hair to everyone!?

Calm down, once you evolve your hair will disappear.

Uuh, so perverted! What should I do!

Fufu... Everyone worries about growing up.