The girl you just called fat? She is over-dosing on diet pills. 
The girl you just called ugly? She spends hours putting makeup on, hoping people will like her. 
The boy you just tripped? He is abused enough at home. 
That guy you just made fun of for crying? His mother is dying.
Put this on your profile if you're against bullying. I bet 95% of you won't do it.