At my last job, I was the one who would stump everyone by asking in meetings what the various TLAs (three letter acronyms) and AOFLs (acronyms of four letters) stood for -- a lot of times
no one knew what they stood for, just what they refered to.
The group of 13 I hired on with took to making up our own acronyms and using them in meetings, no one ever asked, and
I learned quickly not to do so in public as many of them were profane, or at least questionable.
My favorites are still CWOT and TWOT (pronounced see-watt and tee-watt), for "complete waste of time" and "total waste of time." A TWOT was worse than a CWOT, if anyone cares.