Fucking something up much, much worse than fucking it up. Usually results in death, or worse, expulsion.
Ted was told to prepare the triangle party hats for his boyfriend's son's thirtieth birthday party. Ted did not. Ted decided to take "a very long shit" with his boyfriend. Ted fucked it down.

The man is someone known to fuck it down.
by Hot Pants Rothko January 1, 2012
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An immense amount of rain or snow falling from the sky.
Guys look out the window, its fucking it down with snow!
by StephanieTanner February 10, 2017
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The embarrassing act of having a dick slapped against the ass crack to show absolute superiority, in that if the superior wanted to, they could rape the inferior at any time.

A display of dominance.
"The big guy threw me to the ground in the showers and fucked me down, he told me to come to his cell later"

"The alpha dog will often fuck them down to show his dominance." "The other males submit to the alpha's down fucking to show their allegiance."
by arkyvaza June 26, 2015
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Lethal variant of "fuck you up";Once fucked down you can be fucked no further unless a coffin fuck is applied.
Don't mess with Jimmy! That guy will fuck you down.
by Jimmy Timebomb February 20, 2013
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Opposed to fucking somebody up, this will almost always end the beings life. To fuck somebody or somthing down, while walking behind the person or object you must vigorously leap into the air over your enemy, at this time you will be hovering over them. Once you are succesfully hovering over the human you must pelvic thrust their cranium into the cavities of their chest.
Dude, i just fucked that guy down. I think hes dead. I love to fuck down!
by Booby licker777 January 23, 2011
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the opposite of a fuck up, someone succesful with alot of money.
guy 1: remember that guy rob?

guy 2: he got a leading role in a movie, what a fuck down!
by killzcobra November 26, 2011
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To quit doing something, or to tone down an activity. Typically used towards drunken idiots who are being obnoxious or just generally any friend who is taking a joke too far

Verb
"Hey Candie! You're smoking too much pot! Fuck down! Now!"
by TheSomethingNick May 1, 2010
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