Well killing him at school wouldnt be wise now would it
I mean in my personal experience I think it's good to just have witty jokes. Not necessarily comebacks but just something clever that'll lighten the mood and show your not a target or somethin' Most of the people I've seen bullied just can't take jokes or know how to interact with people. I mean sure there's special cases where some kid is a genuine asshole, in those cases just fuckin' fight em'. You're both kids, you'll just get a slap on the wrist or summin
Suck their dick to assert dominance
Most people deserve to get bullied