Back in my much younger days when I was misguided and thought unicycling was cool, I had finally become proficient at riding. I saw someone else with one doing 1-2 ft drops, jumping. Like any little wanker with a collection of pokemon cards flocking to another little wanker with a charizard, I was drawn to this kid with the unicycle. Not wanting to be outdone, I hopped on his unicycle for a try (unicyclists will always let someone try their cycle as it is usually hilarious to watch people fall instantly). I started riding and went for the drop, still sitting on the seat. My nuts impacted HARD on that hard seat. That is the day I learned that it is absolutely crucial to both hop a unicycle and jump a unicycle with straight legs, not sitting.
I really do think that unicycling is the least-manly thing one can do. Just think about the shape of the seat. They were made for clowns for a reason. No one with any kind of package down there should ever ride one. I wince thinking back on that memory, as well as that whole weird phase.