well? okay here's another one: A little harder, right? Nope. curled fingers mean yawning. Don't believe me? Also, screaming using shows teeth. While yawning is a primarily over the teeth thing: I'm not deaf though. but then again, I can't hear the pictures anyway. read more
Deaf people also yawn so they would know what it feels like and looks like. When people yawn there face looks different than when they yell or scream. When one is screaming the eyes are usually open, their forehead is raised and they look angry or upset. read more