Whop,guinea,dago,goomba, take your pick. Basically an I-tie who is disgruntled because they weren't born in Italy. As a rule of thumb the word is butchered with no closeness to actually pronounciation which pisses the person off even more. Ex: "DeyeGuralmo" or "Geranamo"
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!