This is FoaF-level stuff, but: I used to work with a guy who in a past life was an HP-UX dev. He told me that the guys who worked on the signals support in the

This is FoaF-level stuff, but: I used to work with a guy who in a past life was an HP-UX dev. He told me that the guys who worked on the signals support in the OS had a 10-foot pole between their cubicles that had a flag on top reading: "You must be THIS tall to use signals."