1-A sheila is a worshiping word for a beatiful mysterious woman that one of your mates knows on a first name basis, but you have never met.
2- a possessive term used for ones girl, lover, or CSP
First Kiwi bloke: geeez mate...that sheila of yours...she is a beauty
Kiwi Bloke: ...stay from my sheila cuz...
Aussie Bloke: as if you would fuck a sheep...bloody sheep shagger
An insult hurled at new zealanders, by australians mostly. it is a reference to the sheep prominence in new zealand- ten sheep to every person. sheep cant breed that fast on their own, so the "sheep shaggers" help
Kiwi: we fucked you aussie's up in the rugby union!!
Aussie: go fuck a sheep, ya sheep shagger.
Kiwi: leave my mutton out of this...