the darlignhurst briefcase refers to the cask of wine (goon) a homeless man walks around darlignhurst in sydney city all day with, it provides him with a pillow at the end of the day. the word darlignhurst can be changed to whatever major city the homeless man is roaming and drinking his cask wine.
the homeless man went to the bottle shop in the city to get his darlignhurst Briefcase
by baddazoner December 27, 2011
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Briefcase pants can be compared to what we commonly refer to as traditional 'cargo' pants, yet generally they may have a few additional pockets or features. They offer additional spaces to hold things, much like that of cargo pants.
Did you see the briefcase pants a julie was wearing yesterday?!? They were so next level she even had 3 extra crystals, a deck of tarot cards and a stuffed dragon in the pockets! So many pockets!
by DarleneOliviaPope June 11, 2017
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A carrier bag that "poor peoples" shops give out ie: Aldi Liddle Farmfood and so on. Young poor children often are riddiculed by the better classes at school for bringing books etc in the aforementioned boro briefcase in the Middlesboro , Billingham & Stockton area.

Also what scummy piss heads carry their "pop" home in. Slightly more discerning scumbags keep Tesco or Somerfield bags on them to tranship the adli booty into, so they dont look quite as scummy on the bus home!
Eyup Dave! ere comes raggy Richy with his cans in a "boro briefcase"
by Upper class twit August 6, 2007
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A mong who carries a briefcase. It is quite common for them to wear suits and have hot mums
From the british show 'The Inbetweeners', Will is reffered to as a 'Briefcase Mong'.
by briefcase mong July 6, 2009
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noun: a modern day superhero. on the surface he looks like a clean-shaven, well kept gentleman. but really.... he's the sole force against evil in this hostile world. he's 100% man, and 10% briefcase. his briefcase is composed out of the hides of baby manatees and the tail fin of a basking shark, which he killed with his icy gaze. no one is sure of the contents of the briefcase, but several have tried to find out; unfortunately they failed, resulting in horrible deaths. it is known that Captain Briefcase lives in a doorless house with no windows; he simply walks through the walls to get inside. the only contents of his house are a sharp razor, a change of basketball shorts, and small white t-shirts. this guy is so intense, he killed two stones with one briefcase.
taylor: goddam, psychology is sooooo boring!

mike: seriously, i wish something cool would happen today.

marc: i cant even stay awake...

*Captain Briefcase enters the room*

taylor, mike, and marc: OH FUCK!

*everyone is turned to stone*
by the storm drains May 18, 2009
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Another name for a case of cheap beer. Usually seen around indian reservations in the left of right hand of one walking away from a gas station or convenience store. Also can be opened during the said walking
by Romulas and Edgar July 21, 2011
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