A timeless hairstyle. Usually consistent of the wearer's choice of a wide variety of cropped top "do's" seamlessly coupled with a flowing tail of hair which can also consist of many different styles. The wearer can often be heard chanting the signature style catch phrase, "Business in front, party in back."
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!