I can remember one of our bay support (Klingons) getting a jolly at Deci and when the pilot told him to press "Selective jettison" it was actually set at "Jettison all"
Apparently all the pilot said on the way home was "Oh F**K, Oh F**k".
Jollys stopped immediately and our hero "Cpl Kev Norman"
ended up being called "Napalm Norman" for the rest of his career I imagine