No they don't. and who is to say that the behaviour needs change, as far as i can tell it's only you, and its an opinion. They aren't breaking any law, nor any term of use of the site, so although i personally would probably prefer that kind of joke/banter was toned down there is pretty much no grounds to tell them they cant, As such doing so only makes you look like a dick.someone has to stand against it for the wider observers. how will you or others change behaviour if you continue on without repercussion?