The Bo Diddley and the "Shave and a haircut, two bits" are two versions of the same rhythm, as are "Hows your sister? She might" ,"never clean the window with a soft-boiled egg", "He played his ukulele as the ship went down" or"If youre an angel, where's your wings?".There are Spamish phrases I believe as well, that go to the claves beat that is the underlying structure of all these rhythms. And, I would predict, African mnemonics as well, but I dont know any. I will do some research.