Sense of humour-Be happy by making others happy

Sometimes my sense of humour backfires. Which means instead of giving me pleasure by making someone happy,it slaps me on my face when someone feels hurt.This can be rightly called misuse of the sense of humour,if it is used to humiliate or belittle someone.If someone gets pleasure by doing this he/she is  nothing but a sadist.But,one's sense of humour is of no use, unless it's aim is-Be happy by making others happy.