Ryder doing stretchs

Not really sure what was going on here.. Ryder kept hoping off the bike and doing this.
We aren't sure if he was doing a trick or if he was stretching. He was trying out a lot
of tricks on his motorcycle. He is almost too big for this motorcycle and his four
wheeler, but I am not sure if mom is ready for him to move up..
The tricks were scaring mom. What is Scott creating..?