Best niche random fact about the Fab Four?

I know we all have at least one fun fact about The Beatles we’ve been dying to tell someone but haven’t had the opportunity to. Well, this is it. I want to hear the most useless weirdest facts about Paul, George, John, Ringo, and/or anything else relating to them.

My fact isn’t super niche but I find it very interesting how John’s eyesight was so bad, he was declared legally blind by 1970 😭