Bully 1 to Bully 2: You're ugly.
Bully 2: Look in a mirror.
Bully 1: Just because it worked for you doesn't mean it will work for everyone else.
Bully 1 to Bully 2: You're ugly.
Bully 2: Look in a mirror.
Bully 1: Just because it worked for you doesn't mean it will work for everyone else.
Listen up, buttercup. So, one bully calls another bully "ugly". The second bully tells the first to look in the mirror. The first bully then implies the second bully is ugly, and that's why telling someone to look in the mirror works as an insult for them, since they are ugly themselves. Sheesh, I had to spell it out for ya.