About a year and a half ago I woke up one day with a cracked rib, and half a pound of butter all over my shoes. I think I fell over a chair on my way to bed or something. Hurt like buggery for weeks, I couldn't sleep on my right side at all, and if I moved in bed it felt like someone was stabbing me in the liver. Had to go into work the next day and shift a couple of tons of metal shot blasting pellets, but strangely enough that didn't hurt as much as lying in bed.