It's a bit like that old joke which goes something along the lines of.
'Gosh Inspector, how can you tell that the dead man, lying out there stark naked, was a pilot'?
'Easy, big watch, small penis'.
Personally, one finds that a Rolex green Submariner does the job quite well and for some very peculiar reason, women seem to prefer divers to flyers. Make ot that what you will!
