If you are the one doing the bullying:
Then grow up and get a life and stop picking on those that you think are weaker and more vulnerable than you. If someone is being bullied by you, do you know how much courage it takes to keep showing up everyday? To keep coming back home, or back to school, or back to work?
No, it is not very likely that you do, because hiding behind that stupid, tough exterior is a stupid, weak person. They have more courage and strength in their little finger than the whole of you. If someone started to bully you the way you bully others, then you would not last for one second - and you know it. That's why you do it. Because you are scared and weak and afraid.
Stop it now before it all gets out of hand.