duff me is a expression adapted from Facebook, usually when people say it (specifically teenagers) they mean , either . A. They can't stop laughing.
B. What the person said was dumb or unbelievable.
In other words, duff me is sarcastically telling someone to hit them because of what they just heard or saw.
A term coined by Australian sailors for a large piece of red meat (usually a full steak or several slices of roast) that are eaten as a dessert during the main meal of the day.
I just had two serves of meat duff and now I am as full as a WRAN in a maneating contest.
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!