If you think fractured skull is bad, just wait till you are older and have internal haemorrhoids burnt off with a laser...on the INSIDE...when you go for a shit after you WISH you were dead!
As for accidents...you may as well get used to them, because of a simple mathematical equation:
Teenage "yoofs" + Souped-up cars= RoadKill
A mate of mine had his eldest son wiped out last week...
3 kids + BMW 320i + 0230am + a few pints too many= A very upset father.