hero dads are those guys at the outdoor rink that try way too hard or when u steal the puck from thier kid they come and hack u in the ankle. maybe take the occasional slapper
bob: how was the rink
joe: pretty good, had some dangles except this fuckin herodad kept hittin me
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!