n. the mixture of crumbs and bits that are left over in the bottom of a cereal box that is not worth eating. It has a similar texture to pencil shavings and eraser pieces.
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!