To give a serious answer I read somewhere: unicycling. Very few people can actually ride one, so if you can ride a regular bicycle you are probably above average at unicycling.
> Very few people can actually ride one, so if you can ride a regular bicycle you are probably above average at unicycling.
I don't understand, are you saying that the average person can't ride a bicycle?
Unicycling is seriously difficult! I failed at learning to ride one.