it is a ancient word used by the muslim extremist in the twinky dynasty times, it is when a chewbacca has sex with bike patrol1 and breeds an unholy super hary spawn of satanic gothic suicide that is so heshing
P.S- bike patrol 1 got fired
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!