
duffer - silly fool (usually an affectionate term)
 cheeky - Impertinently bold; impudent  (though not 'Australian', and not slang?)
 pissed (drunk) - pissed = drunk; pissed off = angry/annoyed
 Macca's- MacDonald's (yuk)
 doonah - doona is a genericised trademark - a type of duvet
 root - (verb) to have sexual intercourse, (noun) someone you have sexual intercourse with
 
spunk - a bit of a 1970/1980s term, a hottie
 fanny - playful term for vagina, used with children. The male equivalent would be 'doodle'
--oops sorry just realised you know what they mean-what a duffer