Hand. If hands could speak, they would have a lot to say. As one of the most expressive parts of the body, hands are constantly communicating with others through gestures, motions, and actions. However, if they had the ability to speak, they would be able to convey even more complex messages and emotions. First and foremost, hands would likely express a wide range of emotions. When someone is happy, their hands might wave in the air, clap, or even give a high-five. If they're sad, hands ...