I'm an experienced audio engineer and performer.
I've had men leap up and explain to me very carefully and slowly how to deal with cables usually by damaging them by twisting into a figure eight and then further twisting into a demented celtic knot pattern instead of the proper method of neatly wrapping the things so they don't break inside.
I've also been told that I didn't do bad, but I should go back and listen to how the original musician performed it, because I was 'failing to catch all the subtle nuances and delicacies of his composition'. When I WROTE THE FUCKING TUNE. I've also been told what the Actual Meaning of a piece is and that I was completely wrong because I was a woman and couldn't possibly understand where a Young Man is Coming From. Guess who wrote that one as well? Yup.
I think the most annoying is somebody repeatedly informing me that he 'used to be a sound engineer with [influential band]' drove a van about for a couple of weeks two summers ago until they fired him saying 'the sound is shit' fiddling with the knobs on channel 1 I resisted decking him and then 'that's so much better - look at what I've done and learn from it'.
Trouble was, there wasn't anything patched into channel 1 - the signal was going into 12, as per the fuck off big labels I'd put under the strips and the diagram taped to the wall, so he'd 'improved' it without actually doing anything to it. I spent the rest of that session with high attenuation filters in and, every time he demanded I did something to it, pretending to twiddle channel 1 and keeping a silent tally of the number of times he said 'that's better'.
At the end of the session, he said he was glad I'd been able to learn something from him, as the sound was 'brilliant'. In my head, I was screaming 'Mate, I've been teaching this shit since before the last time you your mum washed that minging T shirt. This is literally MY FUCKING DAY JOB'. Instead, I smiled sweetly and reminded him that the extra hours were also chargeable and would he like stems or a mixdown, as I'd send those through as soon as the additional payment cleared and what format would he prefer.
He drew himself up to his full height and informed me that, obviously, he wanted the entire recording in .mp3 format for the best quality. For those that don't need to know, .mp3 is a heavily compressed, lossy format that is unsuitable for mixing/mastering. So he was telling me pretty much that he wanted the shittiest version because it was the best.
I was strangely unavailable for future bookings.