i think "oomf" has evolved from being a literal acronym that you're meant to interpret as such, to being a word in it of itself. in my brain it's moreso a synonym for "a friend who isn't very close", in a similar way to how "lol" is perceived more as either "oh i think that's funny" or as a way to make it clear that you're not taking something too seriously—kind of like a tone indicator of sorts, if that makes any sense. these acronyms have kind of been extracted from their literal roots & are now used to display broader concepts instead of solely being shortenings of other phrases. this isn't really related to your post itself, but it got me thinking & i wanted to share my thoughts X')

Yeah, I always have the full sentence attached to abbreviations so when I read something like "my oomf" I read oomf as its own word but the meaning of "one of my friends" is still there so it gets very confusing like, yes "my oomf" but also "my one of my friends" at the same time. This is why I always try to avoid using saying oomf because stuff like that bugs me haha

That makes so much more sense. I was wondering why "oomf" was a substitute for "friend" T-T thank you f00f the f00fy