“J”

Jackaroo – a male station hand (station being a big farm), usually tending cattle or sheep
Jake – alright (for example “…I’ll be jake”)
Jaffle– is a toasted bread sandwich cooked by compressing the sandwich between two hot iron surfaces
Jaffle iron – a home appliance or camping tool, used to make a toasted sandwich
Jam tart– a sweetheart (for example “…he’s my jam tart”)
Jarmies – pajamas
Jaw hit the floor – when somebody is totally surprised by something (usually caught completely off guard)
Jiffy (in a) – a very short period of time (for example “…I will go and collect the mail in a jiffy”)
Jiggered – something is said to be jiggered when it is broken or non-functional
Jillaroo – a female station hand
Jingoes (or Jingy’s) – usually preceded by the word “by” and used to exclaim surprise (for example “…by jingoes he could hit a baseball a long way!”)
Job somebody (to) – if you job somebody you have punched them (usually around the jaw or nose area)
Jocks – men’s underpants
Joe Blake – rhyming slang for “snake” or can also be used to describe somebody who is shaking (for example “…he’s got the Joe Blakes”)
Joe Blow – just an everyday average person
Joey – a baby kangaroo usually only seen inside its mother’s pouch
Journo – a journalist
Jumbuck – a sheep
Jumper – a pullover or long sleeved vest
Just what the doctor ordered – not necessarily a medical term but used to describe precisely what is required (for example “…despite he kept inflating his tire, it continued to lose air. Accordingly, he took the tire in and had it repaired which is precisely what the doctor ordered.”).

“K”

K – kilometer
Kafuffle – a commotion or disturbance
Kanga (or ‘roo) – short for kangaroo
Kangaroo hop – jerky movement of a stick-shift car
Keen as mustard – very enthusiastic about doing something (Keen’s was a famous brand of mustard inside Aussie grocery stores)
Kelpie – Australian sheepdog originally bred from Scottish collie
Keep your shirt on – to stay calm or remain patient
Kindie – kindergarten, pre-school
Klicks – kilometers
Knock – to criticize somebody (for example “…he’s so hopeless! He can’t even catch a ball!”)
Knock back – a refusal that can be experienced in all manner of circumstances. For example, a lady may knock a guy back when he asks her to dance, a home owner may knock back an offer to buy his or her home or a person in a bar may knock back (that is, to drink) a beer or two while in the bar.
Knock down – drink
Knuckle sandwich – A punch to the mouth
Konk or konker – is a nose

“L”

Laid back – relaxed, informal
Lair (or mug lair) – somebody flashy but with little personal substance
Lamington – small square of sponge cake (angel cake) covered in rich chocolate icing and desiccated coconut
Lark – an amusing incident or a person themselves may be referred to as a lark (for example “…he is a real lark.”)
Larrikin – a bloke who is always behaving silly
Laughing gear – a mouth
Laughing jackass – a kookaburra (a meat eating bird unique to Australia)
Lay-by – store system of paying for goods in installments (lay-away in the US)
Lead foot – a person who drives too fast
Left in the lurch (to be) – to be abandoned at a time when you need help
Left out in the cold (to be) – a person is said to be left out in the cold when they are not informed about something or something is deliberately kept secret from them
Lend of (to have a) – to take advantage of somebody’s gullibility, to have a person on (“…he’s having a lend of you”)
Let rip (to) – to pass gas, or to f**t. If a person advises you that they have just “…let one rip”, it’s probably time to relocate!
Lid – a hat
Lift a finger (to) – to help a person in any way. The term is most often used sarcastically to indicate that somebody did not actually help; “…he was too lazy to even lift a finger”
Like a chook with its head cut off – a circumstance describing someone who is flustered. “Chook” is a word for chicken and the term is meant to convey a headless chicken running about after its head is decapitated during slaughter.
Like a mad woman’s breakfast – something that is very messy or all over the place
Like a stunned mullet – somebody totally bewildered is sometimes described as being like a stunned mullet (a mullet being a type of fish, and “stunning” being the first process of killing the fish for food production)
Like a ton of bricks – with great force (for example, “…news of his car being stolen hit him like a ton of bricks”)
Like a two-bob watch – something that is totally unreliable. Two-bob (or two shillings) is a description of currency pre-dating February 1966, at which time Australia converted to dollars and cents. A watch costing only “two-bob” or twenty cents would be considered almost worthless and unreliable.
Lingo – language
Lip (to give) – to be cheeky or to back chat
Lippy – lipstick
Lilo – an air mattress used on the floor
Liquid amber – beer
Liquid lunch – drinking beer at lunchtime
Little boys – cocktail sausages (small sausages)
Local rag – a paper newspaper specific to a local area
Long in the tooth – somebody who is old
Loo – toilet
Looker – a very attractive person, either male or female (for example, “…she is a real looker”)
Longneck – a 750 ml tall bottle of beer (26oz)
Lucky Country (the) – Australia
Lug – has a number of uses; a lug can be somebody’s ear, to lug something is to carry it or a lug can be a foolish, gullible person