Guy1(really tall guy): YOU WANNA FIGHT SHORT STACK!?
Guy2(really short compared to guy1): YEAH LET'S GO JOLLY GREEN GIANT!!
*Guy2 gets punched and goes crazy*
Guy3(some rando): *yells at guy1* YOU DONE MESSED UP A-ARON!!!
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!