My friend is deaf and she told me to write this... Her words not mine.. 'We can tell the difference from some abnauctiaus un mannerly person not covering there mouth when they yawn.... And some ignorant person who is screaming... Haha no hate! But usually when someone yawns they look tired and when someone yells they look mad so we're good :) Im deaf and proud to be! :D'
Haha ok brave of you to ask as you may of offended some people. But this seems a genuine question as you obviously haven't lost your hearing before. Being deaf heightens other senses as we would be more dependent on them than hearing people. If you look in the mirror and yawn then scream you will see your facial movements to be different. Also put your television on mute and watch the reactions of the people's faces. Facial expressions can usually say a lot more than words and don't lie.