Without looking at others' answers first [honor system], do you know (or, better, can you guess) what subject in the news is referred to in the following old mnemonic?: "Mary's violet eyes make John sit up nights" [HINT: The word "Phooey!" was added to the phrase when a discovery/declaration was made in the first half of the 20th century.]
Do you know any other cool or obscure mnemonic devices you could share in 255 characters or less? If so, please do so here.