Similar Story:
I was at my friends mother's house one weekend, riding motorbikes around in their paddocks (she trains his horses). I thought that his mother and his sister were in their lounge room watching telly. Their lounge room had one of those massive sliding glass doors, which was open.
I thought it would be the funniest thing the world has ever seen to ride down to thew house, jump the gate, then ride into the lounge room, revving the motorbike up and generally giving them the shits while they tried to watch telly.
So I belted down the lane, jumped the gate clean and headed towards the room. As I got to within about 5 metres from the door, i realised that someone had got up and shut the glass door (probably due to noise from the bikes) and i went crashing through the glass door into their lounge room. I was on my belly with blood and glass everywhere and the bike (still running) flinging grass and dirt all arounfd the room.
Mrs A was not best pleased. it took me fncken ages to pay for a new door, decorating and a front tyre on the buke, bike i have several wicked scars.
Maybe a winner (of a Darwin award).