Early in my career, I worked in support for a company which made developer tooling.

Male programmers would call in and do a bit of intro so you knew they were not dumb, just busy.

VB6 programmers would say things like "I am a very senior VB developer". They were the only "very senior" programmers who did not seem to understand things about OS stuff. Like exported functions and their different calling conventions, why you need to "register" COM .dlls, environment blocks, handles, etc.