How do you spell p you?

The phrase "p you" doesn't have a conventional spelling. It's likely a slang or informal expression, and the spelling would depend on the context and intended meaning.

For example, it could be:

* "P.U." (short for "pee you") which is a slang expression for "You stink!"

* "P.Y." (short for "pee you") which is another slang expression for "You stink!"

* "P you" (with no specific meaning)

It's important to consider the context and intended meaning when trying to figure out the spelling.