1) A small amount of something. Almost insignificant, but significant enough to be define-able.
"Wow, that girl was so nice! She was so sweet! But then I saw her dry humping the picnic table while moaning 'i love some hard wood'. She's a tadbit nasty
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!