Those characters that never show any emotion? Or, if they do show emotion, it's always anger and/or despondency? Yeah, every single one of them was at one point told to "cheer up a little". The result? Horrible. It can range from merely discomforting to downright Squick, as they just don't get it. Expect more or less horrified reaction from their friends. Sometimes appears alongside Ha Ha Ha No when they're especially not buying it. Examples of The Un-Smile include: