Mine is OOO for Out Of Office. I always misread it in my head like a ghost and it takes me a few seconds to process. It also doesn’t translate to speech—you have to say the whole thing.
Interested to see if others have similar acronyms they beef with.
POS I find very funny as I’m often working on Point-of-Sale equipment, and most of it is running Poorly Optimized Software, making the whole thing a Piece of Shit for the users.