Physical and verbal abuse.
Boys, especially cocky ones tend to like to call other boys they don't like derogatory things, such as "gay", which is one of many words I have been called (even though I'm not gay). I've gotten into multiple fights because of this, actually I got suspended because I got into a fight but that was all Year 7-9 and my Head of Year said it won't count or go on my permanent record. So I used my Year 10 year to clean up my act and just try to ignore these people, by the end of the year most of them grew up and I actually get on with them, no fights in that year too.
I'm going into Year 11 this September and I think by then most people start to mature and grow out of it.
Bullying is really childish, it won't stay in them for long, they will soon realise how stupid they have been and change their attitude towards others. Don't be discouraged people!