Frankly, I've stopped believing in that my jokes are understood by anyone, so I tend to call myself the queen of very, very bad jokes. I've offended so many people just by having a black, cynical humour that frankly, I don't care. I feel sometimes, people simply try too hard to be offended, so really - *shrug*.
In all fairness, though, most people get it, so I'm glad each time I elict a chuckle. Triumph. Mwahahaha.