To go out with all intentions of getting slobber-bombed and waking up in some random hotel room Thinking..."what the fuck happened?" And the only landmark you recognize is the Atlantic Ocean.
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!