Who are you?

A man in a striped tank top stands at a door, then turns to face the camera with a surprised expression as text appears above his head. Another man in a black tank top and sunglasses stands at the door, pointing and holding a sign that reads "anus," while text appears above his head. The man in the striped tank top turns and walks away, revealing a sign on his back that reads "poo," as the man in the black tank top watches. The scene takes place in a hallway with a white door and a wall with the number 16.