Tall poppies : successful people
Tall poppy syndrome : the tendency to criticize successful people
Tallie : 750ml bottle of beer
Taswegian : derogatory term for a person from Tasmania
Tea : supper
Technicolor yawn : vomit
Tee-up : to set up (an appointment)
Thingo : Wadjamacallit, thingummy, whatsit
Thongs : cheap rubber backless sandals
Throw-down : small bottle of beer which you can throw down quickly.
Tickets, to have on oneself : to have a high opinion of oneself
Tinny : can of beer
Tinny : small aluminium boat
Tinny, tin-arsed : lucky
Togs : swim suit
Too right! : definitely!
Top End : far north of Australia
Trackie daks/dacks :tracksuit pants

Tucker

Tucker (Photo credit: SDLX Tokyo)

Trackies : track suit
Troppo, gone : to have escaped to a state of tropical madness; to have lost the veneer of civilisation after spending too long in the tropics.
Trough lolly : the solid piece of perfumed disinfectant in a men’s urinal
Truckie : truck driver
True blue : patriotic
Tucker : food
Tucker-bag : food bag
Turps : turpentine, alcoholic drink
Turps, hit the : go on a drinking binge
Two up : gambling game played by spinning two coins simultaneously