When one either performs or receives a Wellington Finger while in a porta-loo.
"I gave that bird the ol' wellington finger in tha' loo."
"Fancy a Magic Box love?"
by Dr. Wellington and Sons November 2, 2011
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In the restaurant business, the microwave is known as the magic box because food needs to be hot right now and Chef is breathing down your throat to get it to the guest.
Come on! Throw it in the Magic Box and get this order out of the kitchen!
by The Doctor Number 11 April 5, 2010
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1. A magical box full of all the fucks that have not been given.

2. Masturbating into a box fan to see how far the semin will fly.

3. Your box of dildos
The Magic Box of Fuck was a disaster, I aimed wrong and got myself.
by Bloodhands September 13, 2018
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The idea that certain devices or contraptions are inherently "magic" in some way and mere mortals are incapable of understanding their inner-workings. Some devices subject to "magic box theory" are (but are not limited to) computers, car engines/transmissions, microwaves, televisions, radios, calculators, etc.

Believers of the magic box theory are easily singled out by judging the reaction after giving them a simple request such as "open your hood" or "open the side of your computer".

A commonly held belief among Magic Box Theorists is that these devices have a will of their own with some sort of propensity toward a specific behavior. They can be heard stating that their "computer is acting funny" or that their "car is behaving differently", completely oblivious to the fact that computers and cars do not behave, they are behaved upon.
I told my boss's wife I could fix her computer. She said that's impossible because something is wrong with the "inside parts". Apparently she is a "Magic Box Theorist".

My boss wasn't sure if his car had antifreeze for the winter so I told him to open his hood and check. He freaked out and nearly choked to death on his tea. He, like his wife, subscribes to the "Magic Box Theory"

My friend's dad got a new TV and I set it up. A few days later he calls me and says "I pressed some button on the remote and now the TV isn't acting right". I'm sure that may have something to do with what action was taken on the TV e.g., the remote. Apparently, my friend's dad is a "Magic Box Theorist"
by CPUOverclocker64 December 14, 2009
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i.e. A lighter, a device used to lite things, or start a fire
"Hey do you have a magic box of fire so i can light my cigarette?"
by Captian LuLu January 25, 2007
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To blatantly let out a loud dank nasty FART! i.e. To pass gas.
*you smell a dirty fart stench in the air then ask...*
"Who just totaly opened a box of butt magic in here?!"
or
"heads up..Im about to open a box of butt magic"
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