I saw a UFO when I was a kid a lot of years back. It looked like what I can only describe as like a gigantic dark mains plug fuse. It just glided overhead at speed but made no sound. no lights on it and as it was night It only just caught my eye as it was very dark in colour,but like a fuse it was lighter at each end. but I still remember how weird it felt seeing it, with the speed and the silence yet it looked huge. it took only couple of seconds to pass over and disappear into the distance.
I still think about it wondering what it was knowing we still have nothing like it to this day.