He may as well sue his computer manufacturer and ISP. And the person who taught him how to use the computer. Heck, throw in the operating system manufacturer. And the power company that provides electricity to his home or any other place he signed on for the abuse. Not to mention the company that made the desk on which his PC sits, and the chair maker.
Come to think of it, he should sue God for giving him a life that could be so harshly treated.
SSSSHHHHHHH!!!!!
(You're giving the liars..er, ah, LAWYERS more ideas!)
He'll need to sue his English teacher as well - after all, if he never learned English, he wouldn't have understood the insults.