The act of one removing all items from a persons bag/rucksack, turning it inside out, and replacing all original items back inside.
"Where's my bag? Is that little year 9 shit Jack C briefcasing it again - paki cunt"
by PGKHAF March 12, 2019
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A box of Franzia, (boxed wine) preferably chilled and ready to go.
Person 1: Did you really bring Franzia to a party?

Person 2: No man this is my briefcase. I have some business to attend to.

Person 1: That's one hell of a briefcase.
by alejandrobot July 21, 2010
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This is an act in which a male braids a woman’s hair to her ass hair and proceeds to carry her like a briefcase
Me and this girl tried the briefcase last night and now her asshole is inside out
by Superpooperscooper February 28, 2021
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The person who walks in carrying only his/her briefcase (or personal bag of some kind) after Load-In, and leaves carrying only his/her briefcase before Load-Out begins for a special event production. Not much is known what happens between these times as they are rarely seen outside of Front of House (FOH), while the rest of us work to make all the last minute changes
"Dickson doesn't do anything, he's just a briefcaser."

"It must be nice to be a briefcaser on one of these gigs....Man that's a lot of confetti!"
by DarkWolfe5 April 4, 2010
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Get out of the car Carl! Doesnt matter about the briefcase, leave the briefcase!
by Morfee November 27, 2004
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A Negaunee briefcase is a term used to describe a 24 pack case of cheap beer such as Labatt Blue. In the rough-and-tumble mining towns of Michigan's Upper Peninsula, people overconsume cheap beer on a daily basis. A Negaunee briefcase is perfect for your next business meeting in Upper Michigan. First coined by geographers at NMU in 2008.
The three of us Yoopers pooled our money and bought a Negaunee briefcase to drink while sitting on the shore of Lake Superior. At 24 cans, we each have 8 cans to consume in the next couple of hours. If we wanted to drink more, we would've bought the 30-pack of Labatt Blue, occasionally referred to as an Ishpeming briefcase.
by mtu=sausagefest May 14, 2009
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A watcher of the Wafflin’ podcast
Are you really a Briefcase Monger if you don’t watch every Sunday - ya know.
by Waffler123456 April 25, 2021
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