Opposite of Poo

Alright listen up, nimrod. This joke is playing on the word "poo" and trying to find its opposite. Think of it like trying to find the opposite of up, which is down. You probably think the opposite of poo is pee or something. I bet you also think that vegetables are gross. The answer to this joke is gonna be revealed in the punchline so get ready to laugh your butt off, even though I know you have trouble comprehending basic humor.