No laughing at this:-
Many years ago when I was delivering newspapers in Wimbledon (S London), I had the following unfortunate experience, which, 45 years later, still brings tears to the eyes. This particular house had a long uphill drive, so I always leaned the bike against the lamp-post while I ran up the drive (in the UK, we push the papers through the letterbox - its the personal touch). Back down the drive to the bike and jumped on the saddle. Now this was well into the round, so I was getting a bit hot, and the balls were very dangly, and this resulted in me sitting on my balls. The bike took off down the hill, but I could not get my feet onto the pedals to lift myself up and relieve the pressure, not helped by the potholes in the road surface. The next problem was the sharp righthand turn halfway down the hill to the next house - negotiated this and finally managed to stop and get off. This was a very painful experience!
OK - you can have a laugh, because now it does seem funny, but at the time it was embarrassing and painful, and I had to get on with the rest of the round, then get back in time to go to school.