If there's a downside to watching skateboarding, I've yet to discover it.
Simply standing in a crowd, watching skateboarding earns you +10% respect. Plus, you're guaranteed to see some spectacular tricks: for example, someone smashing their crotch into a concrete dustbin!

An ollie is one such skateboarding trick: it's when the skateboard is made to fly into the air!
Here are the official instructions on how to do one:

1) Get a skateboard,

2) Jump on!

3) Move your feet rapidly,

4) Twist,

5) Pop it,

6) Smash your crotch into a concrete dustbin.

The most ollies in one minute were performed by professional British skater Kevin Hardrum: 13!