Is kick him right square a metaphor?

Answer 1

A metaphor compares two objects that are different without like or as. A metaphor would be "the moon is a cookie". Kick him right square does not compare two things, so it would not be a metaphor. It seems more like an idiom, which does not mean what it is saying. For example, the idiom "Kick the bucket" means death, but a new speaker to English cannot tell because it does not mean what it literally says.