A guy at work has a video on his phone of a girl having sex with his mate in a public toilet - she was unaware it was being filmed apparently (much to his amusement). Anyway, this guy thought it was entertaining to show anyone and everyone this video at work. One guy loved looking at it with him, another (female) colleague told him it was wrong - others said nothing but disapproved quietly. I had a massive problem with it all and had no problem showing how unhappy I was with it all both on a professional (it was in the workplace after all) and moral and personal level as it is a subject too close to my heart due to a family member being abused in a similar way. Throughout the day, he kept taunting me with this video and laughing at me and my reaction to it all The whole thing still bothers me now - several days later. He has been told off by a junior manager for offending me but doesn't care - he now shows work colleagues pictures of his penis ffs. How the hell do I deal with him because no one else seems to be that offended by it all except me. Am I over reacting? It is really bothering me and could do with some advice, as I love this job and it is spoiling my working day because it is a small firm.