I'm not sure when but once Fell down the stairs "Homer Simpson" style. I was carrying mattock to one of the Metalwork teachers to be fixed; when walking down a flight of 6 or 7 stairs I fell over, slid on my buttocks down the stairs, landed with my leg caught on a lawnmower being fixed, and got dragged foward by the mower with the mattock stabbing into my leg. Fortunatly no major harm was done, but I scared a teacher spineless.