A rude, unpolite individual known oftentimes for being disruptive. A Clusiso has zero friends, and doesn't go outside unless it's for McDonalds or fast food.
In social settings, Clusiso oftentimes is very loud and acts in an extremely homosexual manner.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!