Deaf Tend Your: Mouth Morphemes in ASL Deaf Tend Your teaches you what to do with your mouth while signing! It is a must-have guide to American Sign Language mouth morphemes based on a native perspective and fueled by research. The book is packed with information and contains descriptions of 48 different mouth morphemes while the accompanying DVD shows them in action. This book is a reprint and republishing of the original 1996 book Deaf Tend Your from the same authors (Byron Bridges and Melanie Metzger). The ASL mouth morpheme videos have been completely re-filmed in HD with the addition of a Deaf native female model Mickie Burton.