In Through the Looking-Glass, Humpty Dumpty is wearing a cravat (which Alice at first mistakes for a belt) which he says was given to him as an "un-birthday present" by the White King and Queen. He then has Alice calculate the number of unbirthdays in a year. "UnBirthday" is also a piece of music by Pogo from the album Wonderland. The piece includes sampling from the unbirthday scene in Alice in Wonderland.