I was a troubled kid. When I got bullied, even by a guy 3 times my size I would just smash him. Got my ass kicked a lot but you stop fucking with the kid that will hit ya
There was this kid who I liked but teased. he was a little slow. One day he swung, I turned, he hit me in the back. Hurt like HELL. I just laughed and said calm down... but I never fucked with him again.
But more peaceful... guy says "Do you wank"... just say "only fags don't"... in hs, every guy wanks, and every guy pretends he doesn't. once you admit you do, you cn't get too much shit because every guy teasing you does too... Out of highschool, girls think its hot, and they would in hs too if guys weren't so damn childish about it. Think Extramask in The Game

Just own it. Own anything and it loses power.
When you ignore thing like a pencil flick, you aren't really ignoring it, you are obviously trying to ignore it, which just makes them keep it up until they get a response. Do something stupid, its what they respond to. Tell people you know will talk you think he's flirting with you and its making you uncomfortable, and you are thinking about going to teachers about it.
But in the end, all bullys are pussies, and are dealing with that fact by picking on those they think are easy targets. Hit him as hard as you can in nose... hurts bad, eyes water. Even if he kicks your ass, you are not an easy target and you stop getting bullied, and everyone knows you are man enough to stand up for yourself.
Black eyes heal. Sore jaws heal. Stiches heal. If you aren't in the kind of school where it will get you killed, just pop him.
Are you here to improve yourself. Part of being a complete guy, which my disfunctional ass needs as much work on as anyone, is standing up for yourself. He can't win. If he wins the fight, he's an asshole, if he loses he's a pussy. Watch the movie Fight Club. How can you know what you are made of as a man if you have never been in a fight. It's not about winning, its about being enough of a man to fight when you know you're probably gonna lose.
I'm rambling, but no bully picks on the kid who fights back.
Oh man. Pretty much THE post of this thread =D