I've personally broken around 6 bones during my life, the worst one being my "humorous bone" which is the big bone under your bicep.

I snapped it clean in half celebrating Australia day like a bloody true blue Aussie (DaBoomba would be proud). I was drinking on our family boat when I went to walk up to the front of the boat, using the side of the boat (there was about a single foots width of room to walk) a wave suddenly came and tipped the boat too much to be able to stay on the side of the boat.

Naturally I fell off but as I was falling I tried to grab the railing to save the fall but I missed and my arm went in-between the railing and the side of the boat and... well... lets just say gravity did its work.