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.
Www is super annoying to say in english, because “double u” is THREE! syllables. In my native language it is pronounced like “way way way”, which I’m very thankful for.