I was chatting with a friend of mine, an insanely wealthy fella, and he told me that at the last dinner party at George's house that Sir Paul went to, George went around with a wicker basket full of ukuleles, offering them to everyone to play. He gave one to McCartney who broke into "Something" instrumentally, playing it very grand and majestic, which he always said was the best song George ever wrote. George stopped him and said "That's not how you play it on the ukulele. This is how you do it." and proceeded to "happy it up". That's how Sir Paul has done it ever since.
I was like "Wow... that's so cool. Do you play?"
"No."
"Oh... so... was this just something you heard?" (Thinking he maybe went to a McCartney concert and heard him tell the story)
"Nah. We had the best time that night. We played until 2 in the morning."
My jaw was on the floor.