The insatiable craving for doner kebab you experience throughout the day. Oftentimes it is triggered by eating a particularly delicious specimen. It can last for several weeks until you have fully satisfied you desire for doner kebab.
A: Damn, I ate my fourth doner kebab this week and it tasted absolutely delicious.
B: Seems like you have a serious cause of donerhunger.
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!