my daughter was being bullied at school back in november-January of this year, quite badly.
so i told her to pick up a chair and smack it over the bullys head, if they get back up-do it again untill they dont.

Whilst she didnt "chair" him, she did smack him one real hard, made a 15 year old cry lol in front of all his mates aswell.
Teach the youngster some crafty moves, that'll help his self confidence and how to act against the bullys.