So my worst screw up at work (more of a total embarrassment really):
About 5 years ago, the flight deck of a NATO mission flight called me from the air asking for updated weather information. I had to relay it using the phonetic alphabet... only problem was, I had forgotten the entire phonetic alphabet - all I could remember was the Greek alphabet instead (thanks to years of physics equations).
I tried to struggle through, but I was making a real mess of it - I kept saying the Greek letters instead of the phonetic ones
. If that wasn't bad enough, halfway through the excruciating call, another crew came up into the office and had to listen to me making a fool of myself, before both the new crew and my colleague across the room started trying to help me out with the letters.
And that still wasn't the worst part: the call got cut off partway through and when the pilots called back, they didn't realise the phone had connected and that I could hear them talking... they were laughing and making fun of me for not knowing the alphabet
.
I was totally mortified
! I think it took about 3 hours after that for my face to stop burning and to stop feeling flustered
.
Since that day, I've made it a point to know the phonetic alphabet off by heart so that I'm prepared for every phonecall
.