to instruct someone to leave or go away

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

1.) used to tell someone quickly and precisely that you do not approve of them or their actions

2.) to express one's immediate feelings of discontent

1) To express total disrespect to someone.

2) To exclaim disbelief at a statement made by someone else.

cus stephen wont stop sooking about the bloody esky

Commonly used in Australia as a sign of disbelief.
One of the few countries in the world where "Get Fucked" is an acceptable start to a sentence.

Used by Australians to define anything. Second most used word there after "cunt". Can be used when something amazing happens, e.g. Timmy Cahill scoring a stunner or your mate breaking the speed drinking record of your local pub (also known as the Cahillian Challenge )