I had the same problem with "Single Ladies" by Beyonce. Instead of "Ladies" I heard "Legs" So it was a song about people losing a leg because they got careless and didn't show appreciation. So now they are on the look out for new ones.

Once you hear it, it is hard to stop.

All the single legs (All the single legs)

All the single legs (All the single legs)

All the single legs (All the single legs)

All the single legs

Now put your hands up

I'm still disappointed about when I found out that one Soul Coughing song wasn't about con men: "You get the angles, and I'll get the rest", but the lyrics were actually "you get the ankles, and I'll get the wrists"

Not long ago i heard the Theme from one of my favourite Animes as a child and it was just one word I sung wrong but theat one word ruined the song for somehow.

My wife stumbled onto a tiktoker who had this schtick. It was actually pretty funny.

This topic would make a great post

Neither of those sound remotely like the version you heard though.