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.
In Czech we had/have this too. I haven’t heard it in years now so maybe it’s finally gone, but when Morpheus tells Neo about the first “UI” (umělá inteligence = artificial intelligence).