Dont listen to folks who say "I would put their lights out" it's easy to say that when it's not in your face.
You say some of these guy's are your friends,then you need better friends.
My partners younger brother died at christmas after years of bullying from a certain group of youths that he had stood up to.
This was something that had carried over from school,he wouldn't report them deciding that he would deal with this himself in his own way,he challenged a couple of these guy's to a fair fight one on one,but they never took him up on his offer cause they are cowards,they always carried knives and such and were never on their own.
A couple of them stood outside his home and shouted for him to come out and fight,he went out to see what it was all about and about 7 or 8 of them,who had been hiding round the corner, set about him and he died from his injuries.
The sad thing is that none of these guy's had been directly involved in the original bullying,in fact a couple of them weren't even from the area or had even known the lad,they apparently were doing this 'favour' for their 'friend',who was sitting in a young offenders institution at the time.
I dont mean to sound melodramatic,nor am I saying this could happen to you,but you would be surprised at how things can get worse if you get embroiled in this sort of thing.
I know it's really hard and you feel trapped in this as if it will never end,but it will end eventually,if you start getting tough here yourself you may escalate things beyond anyone's control.
People are easier to kill than most folks think.
Not only is this lads family torn apart by this but the perps who did it,now awaiting trial for murder.
Sit it out and try not to let it get to you,when your at school it's hard to see that a couple of years is really such a short time,but it will eventually pass and I am certain that the bully's will one day pick on the wrong person,believe me I have seen this first hand.
Console yourself with the knowledge that you are obviously not of such a low intelligence and that one day you will be more successful,with a life worth living,lots of girlfriends and a flash car.These types are never attractive to girls,they go for nice guy's with brains,not witless dorks.
If you need to defend yourself,then needs be,but dont go looking for it.
You are not alone,everyone will experience this sort of thing throughout their lives,in one form or another,but it does get easier to handle when you are an adult.
All the best, rolfy.