It is very easy to cheer me up. If any one wants to get me out of a bad mood, all they need to do is tickle me. I am just about the most ticklish person in the world. So if anyone holds me down and tickes me i would lose. Laughing is like one of my favorite things to do, so that is always a way to cheer me up.
Another way to cheer me up is if you tell me a corny joke. I'm kind of slow at times so if you tell me a simple joke thats stupid, i usually will find it outrageously funny. Don't ask me why this is i don't know.
I think a smile is the best way to find out how someone really is. A smile means everything about a person. You can tell what kind of mood there in, why there in that mood, and how they are going to react. It will give you everything you need to know.
So in conclusion i think smiling is the best way to cheer someone else up, or even me.