Person: You're so ugly.
Me: You ugly.
Person: I'm not a mirror.
Me: And I'm not your reflection.
Person: You're so ugly.
Me: You ugly.
Person: I'm not a mirror.
Me: And I'm not your reflection.
Listen up, buttercup! This "joke" is all about disses, see? First guy says you're ugly. You hit back with a "you too!" Then he thinks he's clever saying he ain't no mirror, so you can't see his ugliness. But you, the genius, slam him by saying you're not his reflection either, meaning his ugly mug is all his own! Get it now, genius?