Wow... What a jackass.
Try one of these comebacks on 'em:
So you want me to die?
Well, A lot of people are like that, So it seems no one cares what you think.
Jokes on you! You're stuck that way!
And I hope everyone who bullies like you dies.
Funny how no one seems to care.
*Slap him*
Hmmmm, Let's check that, Nope! They're still alive! I guess no one cares what you think!
How is it that random people are more supportive than my own brother?
You think that's weird? Wait till you hear about mangasexual!
Hmm, I wonder if I can live with that... Oh that's right! *Walk way*
*Kick 'em in the "Business partners"*
Oh sorry, What was that? I can't hear you over the sound of satan's laughter!