Speaking about inapprobriate situations, I once told a racist joke which I had heard and which I, at the time , considered really humorous.It was in a group of university friend.When no one laughed I realized that I had made a faux pas.Imagine my shame when someone said "You do know that ...is black". I have ever since that day never told an inappropriate racist joke to anyone. Of course I repeatedly apologized to the injured person but the deed had been done. I have ever since regretted it.