Unicycling on a bicycle...

[jackhandy]

https://www.youtube.com/watch?v=UpBX0ymFtI4&feature=youtube_gdata_player

Never did get the hang of this

 

[flecc]

Some people are amazing at that. My nephew Carl was a cycle-cross champion in South Africa and one of his tricks on bikes was to not only ride on the rear wheel, but to take out the front wheel while doing it and complete the ride with only forks at the front! He was featured in a photograph on a bike magazine cover some years ago doing just that. He'd had plenty of practice on bikes though, having cycled half way round the world when he was eighteen years old.

In his fifties now and still in the cycle trade he contents himself with just repairing them!