jackinini
a human who has no filter and thinks they’re the best at everything, even when they’re clearly not
My cousin is a jackinini. He thinks he’s the best at everything, even though he can’t tie his shoes.
The jackinini in my class talks to the teacher like they’re his best friend and eats a whole bag of chips during math class.
My neighbor is a jackinini. He says he’s the best at everything, even though he can’t swim.