Fantastic thread – I've had a 'trick' back for ages so getting a kick from this.
1st – playing darts in a pub at uni. Had to be helped out of pub and driven home. Was a back spasm, took a week to calm down.
2nd – Travelling home on a train, lay down on three seats to sleep off a hangover, you know with the ridges (not armrests) between them. Anyway, got to stop and nearly died trying to get off seats and had to roll off and go via all fours. **** nightmare.
3rd – avoiding 3 year old as I came into house with an arm full of logs. "Daddy I need to pee" type comments. Didn't feel too bad until the next morning when I couldn't move, couldn't even sit up in bed it hurt so much.
Currently seeing chiro, as apparently right leg is about an inch shorter than the other (they do both reach the ground however?!) – result of twisted hips which is my particular issue.
Thankfully cycling helps to a degree so try and get out a bit…