You know when somebody complains about a bug in your software at a meeting to everybody, you go to their office, find out that the bug is actually an user problem, and then on the next meeting, when asked about the bug the person reports "we fixed it" and you correct them, explaining in detail how there was nothing to fix because the problem was completely user driven?
I love these moments

Hell yeah! My co developer LOVES trying to call out my bugs in front of everyone, when I school her it's so bitter sweet, bitter because she gets all bitchy and sweet because she gets all bitchy lol lol

A salesman at one company I worked for some years ago, called me up and had a 15 minute rant about "this shity piece of software that f-ing never works" and so on... I asked him gently what was the problem and literally clicked on button for it to work as he wanted. Then I invited him to one of our beginners education for that software. He had worked at he company for many years, and was selling the software. One of my best moments as a developer. :-) (and yes, my work was to develop that software and it was a common feature "everybody knew")