*Brush, Brush, Brush*
Everyone goes through puberty. For some people, it’s an awkward couple of years where you don’t know what’s going on with your body, but you can’t seem to keep your hands away from “yourself.” There’s no shame in that, everyone does it, whether they want to admit it or not.
But what nobody in the world ever did during puberty, except for the OP, was brush their singular pubic hair with their sister’s Barbie hairbrush. Their mom was probably just thankful he wasn’t doing anything with the actual doll. That would’ve made for a hilarious story to tell guests, not that this story isn’t humiliating.