My favorite is a note written by an 8-year-old girl on a Qantas flight that was given to the captain. It’s absolutely priceless. WARNING: Do NOT click THIS LINK if you are offended by “adult language”.
“United 123, Chicago Center; I have good news and bad news”
“gimme the bad news.”
“I have a re-route for you, advise ready to copy.”
“Ready to copy.”
“You’re re-cleared direct yadda…”
“Copy all that, what’s the good news?”
“I just saved a bunch of money by switching my car insurance to GEICO. Contact Chicago center on 123.45”
Ok, so I just made all that up, but I’ve been waiting for an opportunity to use it on the radio for weeks.