There was a lad in my year in school was getting bullied by some little prick,anyway one day he stood up to him and ended up kicking f**k out of him,which was great....until home time.
he got badly beaten on his way home by a few older lads and had to take a few days off school,and you know what young lads are like he wouldn't grass.
but that wasn't the end,he got bullied 10x worse until he left school,went from a funny,cheeky young lad to a total recluse in the space of a few years,still livess with his parents now at 23 never had a girlfriend,doubt he's even got a friend these days.