a gronk kid, who has no friends except for his shit xbox. most people consider them to be retarded both mentally and physically and the ugliest of human kind.
that kid Daniel Righetti lives in a hole and plays xbox, fuck his his is shit!
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!