http://www.australianexplorer.com/slang/behaviour.htm

Root: Have sex


http://www.koalanet.com.au/australian-slang.html

Root (verb and noun) : synonym for f*ck in nearly all its senses:



http://psy.otago.ac.nz/r_oshea/FUN%20STUFF/oztaboo.html

root vi. 1. To cheer for a sports team. Root is an offensive Australian slang verb meaning ``have sexual intercourse with''. Announcing to an Australian that you ``are a cheerleader, so you don't see many football games because you are in the stands rooting'' will give a misleading impression about your devotion to the team. 2. To grow roots. ``I rooted some plants'' is practised by vegiphiles in Australia. 3. To dig or rummage. ``I was rooting around in my room for the rent money'' is done only if an Australian does not actually have the rent money.
n. An Australian may take the noun to refer to his or her sexual partner. Even so, saying ``I tripped over a root'' will occasion only the tiniest frisson of delight in your Australian correspondent; he or she will understand.



Understand Grumbles odd look now? LMAO