What does dack mean?
Dack is an informal verb used chiefly in Australia and New Zealand meaning to yank down someone's trousers as a prank, leaving them exposed in their underwear. It is most at home in schoolyard settings, where being dacked in front of peers is remembered as a classic — if humiliating — rite of passage. The word also exists in noun form as "dacks", a slang term for trousers themselves, so an Australian might say they are putting on their dacks before heading out. The tone is invariably playful on the surface but can shade into bullying, since having one's pants pulled down without consent is genuinely demeaning. Outside Australasia the equivalent prank is more often described with words like "pantsing" in North America or "debagging" in Britain. Anyone reading Australian fiction or memoirs will encounter dack regularly, making it useful vocabulary for understanding the region's colloquial voice.
To pull down someone's trousers as a prank, exposing their underwear.
"The year-eleven boys dacked a younger student behind the gym."
Almost exclusively informal; considered a form of bullying when done to an unwilling target.
(Usually plural, 'dacks') Trousers or pants, in Australian and New Zealand slang.
"He tore his dacks climbing over the fence."
Always used in the plural form 'dacks'; never heard in formal registers.
As a noun, the word appears almost exclusively in the plural form 'dacks', meaning trousers; the singular 'dack' is rarely, if ever, used for a single garment.
"Grab your swimmers and a spare pair of dacks for the beach trip."
In Australia, the ultimate schoolyard humiliation isn't a punch — it's getting 'dacked' in front of everyone.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dack
Dack is generally traced to the trademark "Daks", a British clothing brand whose name was coined in the 1890s from a blend of 'slacks' (or similar trouser-related terms) and 'ducks' (a durable cotton cloth used for workwear). The brand name became genericised in Australian slang as "dacks" for trousers, and from there the verb developed: to dack someone is literally to remove their dacks. The word's spread has remained largely confined to Australia and New Zealand, where it remains current in informal speech.
Related word forms
How dack is actually used
Strongly associated with Australian and New Zealand English, especially schoolyard culture; it carries a juvenile, prankish connotation and would be out of place in formal contexts. Dacking someone without consent is widely treated as bullying rather than harmless fun.
Easily confused with dack
"Deck" means to knock someone down with a punch, whereas "dack" means to pull down their trousers.