Mary Roach, Bonk: The Curious Coupling of Science and Sex

"Footnote: In 1998, a woman in Saline, Michigan received a patent for a Decorative Penile Wrap...The patent included three pages of drawings, including a penis wearing a ghost outfit, another in the robes of the Grim Reaper, and one dressed up to look like a snowman."

"The paper does not provide the exact number of penises eaten by ducks, but the author says there have been enough over the years to prompt the coining of a popular saying: 'I better get home or the ducks will have something to eat."