A person who embraces hip-hop culture but is from a rural area or trailer park. Southerners who just try too hard to be "gangsta" or "ghetto" but the redneck in them is just blaringly obvious.
His room is so gangstabilly with the T-Pain posteron one wall and the Confederate flag on the other.
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!