You have a baby sister named Ivory that's 3 years old, but still wears diapers and uses pacifiers. You secretly regress - or well, it used to be secret until your baby sister found out. But now she loves it when you regress, as it means she has someone to play with.

One weekend, your parents had left you with Ivory to take care of her. You started feeling little, and slipped on a diaper and took your pacifier, before crawling into Ivory's room.

Ivory immediately perked up and she dropped her toys when she saw you and immediately crawled over to you. "Bubba! You wanna build blocks wif me?"