Doing this stuff on a regular two-wheeled bike would be hard enough, but this guy is doing the tricks on a unicycle.
The series of jaw-dropping unicycle stunts were performed by Lutz Eichholz in Germany, Israel and Morrocco in 2011.
Check it out for yourself:
Ouch. That sounds painful between the legs.
I second the first comment… That guy was probably howling after they turning off the video camera (especially after that miniature cliff).
They R GOOD!!!!! Man, I could never do that!