PEBKAC: Problem Exists Between Keyboard And Chair (the user is the issue here) Lithobraking Maneuver (our rocket stopped because it crashed into rocks)
Operator headspace problem (the user is a dumbass--we used this one a lot when I was a generator mechanic)
Loose Nut Behind the Wheel -- dumbass driver
Unintended Fauna Interaction -- fucker bit me
I fucking love these special terms, especially the ones about the user being a fucking idiot
Impromptu field dissection: stepped on it :/