Word origonates from New Zealand, a word in which is used to define how much they dedicate a topic about something
Did you like that gang???
Translation: did you like that group???
the act of trying to hard, or putting too much effort into something.Also can be used if some thing is too much or an over load
Tim: man what a footy game
Bil: yea jonno was going hardout in the last half
Ash: That test was hardout