When I was a tiny Mr Larrington we had a maths teacher who, having spent WW2 guarding tins of Spam at RAF Carnaby, considered himself the world's greatest expert on matters pertaining to military aviation. One day he averred that "RAF pilots who eject twice are automatically grounded". Young Nigel sticks his paw up. "Please Sir, my Dad's ejected three times* and he's still flying!"
* once from a Jet Provost and twice from Jaguars