Skysurfing means the sport of jumping out of a plane and riding a board while falling through the sky.
Skysurfing is exciting and dangerous. People who do it are brave and adventurous.
Examples:
He loves skysurfing.
Skysurfing is a very extreme sport.
Skysurfing is not for everyone.
Skysurfing looks like flying with a board.
Skysurfing is like being a bird in the sky.
Skysurfing is the coolest thing ever!