The infamously-moustached cricket umpire who died during a bondage and discipline session in 1989. His panicking mistress dumped his bound body into the raging Huka Falls, introducing sexually naive New Zealand to the word 'Dominatrix'
Also a popular student drinking game and subject of a shortlived ballad.
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!