Paedophile effect
It's when someone looks like they're still in elementary school, but they're really an adult who's trying to be cute. They're hot, but they're also trying to trick you into thinking they're still a kid.
My friend's crush is a guy who still wears a tunic and acts like he's 12, but he's 28.
My teacher's kid is 21 and still wears a lunchbox like it's the 90s.
My neighbor's daughter is 22 and still wears a headband like she's in middle school.