あなた see three teenagers making fun of a mentally handicapped man in the street. What would あなた do?

Stand up for the handicapped guy. Just because someone is different doesn't make them stupid! >U

I kill the three teenagers... with 火災, 火 >:D

BURN 'EM! Burn 'em with fire!!

Tear their ears off and rip them a new one.
I hate seeing people being picked on, especially for something like a mental issue that they can't help.

Go up to them and stand up for the man. if they won't listen,i'll tazer them!

Defend the handicapped man.
No way am I allowing someone to get away with making fun of another person.

*walks over* What the hell do あなた think you're doing? *kicks the theoretical guy in balls* *beats up the others* Are あなた going to do it again?

Nuf said

I'll tell them that this is not good! If someone is mentally または physically handicapped, then we should support him, not tease him! >.<
I hate those people making fun of handicapped!