A noddy
A noddy is a brain-dead person who thinks they’re cool because they wear a hat and say uck like it’s some kind of fancy word.
My boss is a total noddy. He wears a hat and says uck every time he sees me.
That guy at the bar is a noddy. He thinks uck is a real word.
My sister’s a noddy. She says uck and calls me BJ for no reason.