Thats a slippery slope mate. Make sure you are staying within the rules and just report them to a marshal, don't sink to their level by trying to actively hurt someone else.
At the national finals I got a tooth shot out, but since it was an implant I didn't feel any pain. But hey, free to not believe it.
Make sure you are staying within the rules and just report them to a marshal, don't sink to their level by trying to actively hurt someone else.