Mongolian Sign Language (MSL) is a visual-gestural language that developed from multiple languages interacting as a result of both geographic proximity and political relations and of the natural development of a communication system by deaf community members. Similar to the phonological systems of other signed languages, MSL combines handshapes, locations, movements, and facial expressions to form lexemes. This article focuses on one feature of MSL. Many signs with negative connotations are produced with a hand configuration in which the pinky is extended while the other fingers are all flexed. This article presents the data, reviews definitions of morphological processes and phonetic symbolism (sometimes called sound symbolism), and argues that the hand configuration is not a morpheme but a strong phonestheme. (Contains 2 notes and 7 figures.)