Jet technicians have a special suit which is buttonless, pocketless and made in one piece. The idea is to prevent foreign object damage: no buttons means you don't drop them behind you, and no pockets reduces the chance of forgetting a tool somewhere inside. The suits have FOD in huge letters on them, just in case somebody forgets.

FOAF = F = fold case

FOD /fod/ v.

[Abbreviation for `Finger of Death', originally a spell-name from fantasy gaming] To terminate with extreme prejudice and with no regard for other people. From MUDs where the wizard command `FOD <player>' results in the immediate and total death of <player>, usually as punishment for obnoxious behavior. This usage migrated to other circumstances, such as "I'm going to fod the process that is burning all the cycles." Compare gun.

In aviation, FOD means Foreign Object Damage, e.g., what happens when a jet engine sucks up a rock on the runway or a bird in flight. Finger of Death is a distressingly apt description of what this generally does to the engine.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.

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