The upside-down face emoji, also known as the upside-down smiley face, is often used to convey irony, sarcasm, silliness, or a sense of goofiness or joking. Its meaning can be somewhat complex and is very dependent on the context in which it's used. Generally, it is used to symbolize a more playful tone in a conversation, and it's a method of expressing that something isn't meant to...