a kid who resides (or claims to) in a city; usually characterized by pale skin, tattoos, dyed black choppy hair and girls jeans, a can of PBR, and bike;
I almost hit one of those shitty kids on his fixy bike on Boulevard. Why do they all look the same?
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!