I was sitting at a red light once, when a motorcycle sailed through the intersection doing about 50 mph/80 km, with the leather-clad rider fucking t-posing on top of it. Just standing fully upright on the seat, no contact with the handlebars. Hell if I know how they were steering, but I didn't hear a crash.

As a bonus, the most darkly comedic thing i ever saw in person was up on a notoriously dangerous local mountain highway. As I was coming down, I rounded a bend and saw a white charger crashed into the barrier coming the opposite direction, facing me. The car itself was in pretty okay shape, but I guess they hadn't been strapped in because there was a huge, person-sized hole in the driver's side windshield. Beyond the barrier it must have been a hundred foot drop, and there was a local sheriff with one foot planted up on the berm, looking down over the edge. His hat was in his hand, his elbow was resting on his knee, and he just had this demeanor of "well, shit.". I only had two or three seconds to process all of this before I passed it, but I remember it clearly as the most morbidly looney tunes image I've ever seen in front of me.