Hold up there boys.
No one and I mean NO ONE should try anything like this without proper professional instruction on a race track where there are medical personnel on site if you have a problem .
This is not for the amature to attempt on their own .
I have some experience sliding down the tarmack, it ain't fun , it hurts even in full approved race gear.
Do not let your youth and exuberance over load your skill level. Most of all don't try this stuff on the public road.