a beiber
A beiber is when a kid is still a baby and looks like they’re stuck in the middle of childhood.
My cousin is a beiber because he’s 14 and still wears his baby blanket to school.
My friend’s brother is a beiber because he cries when he gets a B on his test.
My teacher said I was a beiber because I still use crayons instead of pencils.