Chattering teeth (sometimes called chattery teeth) are a wind-up toy invented by Eddy Goldfarb mimicking the bodily function of the same name. Goldfarb and Marvin Glass sold their design to novelty company H. Fishlove & Co., which released the toy as "Yakity Yak Talking Teeth" in 1949.^[1] Goldfarb's original design was awarded U.S. patent 2,504,679 from the U.S. Patent Office. As of 2004, a toy based on Goldfarb's specifications was still being produced by H. Fishlove & Co., now a division of Fun, Inc. (a manufacturer of magic trick and novelty items).^[1]

Some off-brand variants of the toy add anthropomorphic features such as eyes and feet.

• Pressman Toy – Inventor Profile: Eddy Goldfarb (Web archive as of February 19, 2012)