Green’s Dictionary of Slang

(orig. Aus.) trousers.

1963–74		B. Humphries Barry McKenzie [comic strip] in Complete Barry McKenzie (1988) 44: When the fellers get a real skinful of the chilled article they drop the daks and yell the magic word.
1985		J. Clanchy Lie of Land 227: ‘Well, drop the old daks.’ ‘Old daks?’ ‘Best have a look. [...] You could knock around for years and never catch a dose or get it on your first throw.’.
1996		Penguin Bk of More Aus. Jokes 452: If I take me belt off, me daks’ll fall down.
1999		Bug (Aus.) 14 May 🌐 Atlas and Zeus – apropos no particular reason – decided to drop their dacks.
2000		N. Barlay Crumple Zone 55: B, sitting there, daks round his ankles.
2000		Hartford Courant (CT) sect. D 5 Sept. 27/3: G’Day from Down Under [...] Take more than a passing insult from a grown bloke in a boy’s daks to get me narkie enough to chuck a spas.
2004		P. Howard PS, I Scored the Bridesmaids 193: You’ve pissed your dacks.
2004		L. Redhead Peepshow [ebook] We sat in my lounge room in our PJs. Mine were a pair of old trackie daks and a singlet.
2014		me-stepmums-too-fuckin-hot-mate at www.fakku.net 🌐 Five bucks says you were gonna take me dacks and give yourself a wristy with them.
2016		Facebook 15 July 🌐 It was right next to the watering hole where old mate shit his daks when this daggy, yobbo bugger came at him with an axe. No dramas tonight but, and I lit up a durry, thought about my hard yakka and headed to the dunny.