The "Stinky Stunner" is a special move by the underground wrestler "Stone ColdStink Austin." It's his signature move of picking his butt to provide feces on his fist before knocking the opponent out cold.
This means your ass is stinky because of poor wiping. It's best to use a wet wipe then you won't be stinking like shit.
Joe has got a stinky bottom because he refuses to use wet wipes. He's constantly sticking his fingers in his butt crack doing a stink check then trying to get others to smell them.