For the short story by Stephen King, see Chattery Teeth (short story). Chattery Teeth are a children's wind-up toy designed by Eddy Goldfarb for design company Marvin Glass and Associates. Originally called Yakkity Yak Talking Teeth upon release in 1949 by novelty company H. Fishlove & Co., a pair of mechanized teeth are wound up at the back, and the teeth clatter together. Reproductions are today sold at novelty stores. While most chattery teeth come equipped with walking feet, many models do not.