I haven't read most of this thread, but I remember a couple from my brother(an army infantry soldier).
"Operator headspace and timing"-putting the blame on the operator rather than the equipment in question.
"That guy's a Lima Delta" insult standing for 'limp d!@k" !
grin

"For joy of knowing what may not be known we take the golden road to Samarkand."
James Elroy Flecker