Without formal training, the larger and stronger naturally defeat the smaller and weaker. Therefore, a basic premise of training must be that the methods employed should make it possible for the smaller and weaker to defeat the larger and stronger.
(Tim Cartmell)

Perspective

When you see a bully for what they really are, you will come to find them embarrassing.
A bully is a weak, insecure person, desperate to feel strong about themselves.
Instead of looking for strength within, they lash out at others and rely upon fear for power.

When you give them humour and pity rather than fear, the bully has no teeth.
If a bully were genuinely strong, they would have nothing to prove. They need you to validate them.

Unwelcome

We do not permit bullies in our classes.
Students are chastened for clumsy/careless/forceful application of the kung fu.
Any outright bullying will result in an appropriate response and potential banishment from the school.

Bullies are weak people and we only want students of good character.