The snurfer really started it all. this dude sherman poppen created it when his 11 year old daughter stood up on a sled. That's how it got started. It got big when kids/people wanted to rebel against...
I'm pretty sure he was 4 when he started and went pro when he was 13 no he was 6 when he started wow guys thanks for the answer... :P how are we suppose to know... cause the truth is 5 years old...