A pair of old, warn-in and often dirty sweatpants. Q-tip known for wearing them to the airport for a 24 hour flight to Sydney form London
Robbo sat in his slacky dacks all day, after a big night out on the tins. Safe to say they were still being worn whilst having multiple masty's throughout the day - average room temperatures rise by apprx 5c when he walks into a room wearing them.
by Backing in Burma November 20, 2014
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v. Shitting ones pants. Australian slang. Commonly used to describe a state of immense terror, said terror either figuratively or literally leading one to involuntarily empty ones bowels directly into whatever trousers one may be currently wearing. Experienced by most persons at some unfortunate moment in life, this temporary affliction can be both hilarious and horrifying to onlookers.
"Mate, my Met Regional is tomorrow afternoon, and my voice has been funky for weeks. I'm packing dacks."
"Dude, are you sure it's not the Raspberry Chia kombucha you destroyed yesterday evening with dinner?"
"Oh, yeah, that's probably it."
by Antipodean Windbag February 12, 2017
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Tracky dacks is the Australian slang for sweatapants. There should be a national tracky dacks day every October 18th. There is such thing as half tracky dacks as well, sport shorts.
im wearing my tracky dacks to school tomorow.
I ripped my tracky dacks in the knee!
by cuberootsbegone October 18, 2017
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When you have anal sex with a woman and get her diarrhea on your penis.
Bob: "Dude, Jenny gave me a total shat dack last night."
Jim: "I'd still tap that ass."

Guy1: "You're such a shat dack."
Guy2: "Isn't that when you get shat on your dack?"
by pocketpotato April 10, 2014
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When something is over a amount of $1000 and more.
Damn for the Chrome Hearty jacket its 5 Rack A Dacks!!!!
by TOPFLOORANTHO March 28, 2022
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pulling up the pants of someone who is peeing in a urinal.
yo! he got reverse dacked, this man pissed his pants.
by 74546 July 12, 2020
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When a chick wears men's boxer briefs and it sags in the front because she hasn't had any work done, yet.
I wouldn't be caught, dack lackin', latenite, in that neighborhood if I were you.
by 8 Dollars May 27, 2022
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