P.O.U.S.
A person so big they could probably take you down with one punch. Like the R. O. U. S. in The Princess Bride, but human. They’re the kind of people who make you question your life choices.
That guy at the gym is a P. O. U. S. He could bench press me and not even break a sweat.
My uncle is a P. O. U. S. He eats a whole pizza by himself and still fits in his pants.
That kid at the park is a P. O. U. S. He threw a tantrum so big, the whole block heard it.