Made myself, well at least i hope nobody else has come up with it. Means somewhere between a tosser and terriwinkle... just a stupid thing to call your friends when they be dumb
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!