I recently organised a visit to my work for a group of old RAF WW2 pilots - a truly amazing bunch. They all had the most incredible stories and spending a night chatting to them was manna from heaven, interesting that some of them still hated the Germans like it was yesterday. Anyway, one of the guys had a slightly funny face and I couldn't quite work out why - he eventually let on that he had crashed a tiger moth in training and as he said, been ejected out of the cockpit when it crumpled, catching his face on the way out!
I thought he was 'expanding' the truth slightly but then he showed me the photos from his wallet - his whole face had slid down his head an inch or two and he spent months afterwards looking like the creature out of 'Hellraiser' (I think?) with all the spikes out of his head holding his face on.
ending up as a test pilot flying Lightnings.