Pilots notes
One of my sisters old boyfriends ran the tale that he had been in the RAF as a pilot and even gave me some JP5 pilots notes with 'F/O ******' (his name) written on them.
I suspected he was telling porkies and some time later his Mum confirmed during general conversation at a party that he had been an airframe fitter!
Thankfully he's now an 'old boyfriend'