An expression that which a horrible disaster or something big has happened, or just going out of control
When I heard that loud thud of the boat exploding, I knew shit hit the fan.
by The Jester of Madness! September 26, 2015
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Basically, this is when emotions break loose and people get hurt. A literal meaning would be that shit gets on everybody due to the intrinsic nature of the fan.
"I found out my brother was sleeping with my wife, and that's when shit hit the fan."
by Define Please June 14, 2016
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The toilet in the 1970's space station "Skylab" had a suction fan and a safety belt to strap yourself down with in zero gravity.

Zero gravity would cause the faeces to float all over the place disasterously so there was airflow to suck the faeces into a bag, a bit like a vacuum cleaner does. Now, if the bag broke somehow, then the "Shit hit the fan!!".
by Marcus Rosenblat January 7, 2007
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When something bad is found out and the consequences start to happen.
"I didn't think she'd find out, until Bob told her about it, then the shit hit the fan".
by yomamas_bin_slobbin April 12, 2009
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The toilet in the 1970's space station "Skylab" had a suction fan and a safety belt to strap yourself down with in zero gravity.

Zero gravity would cause the faeces to float all over the place disasterously so there was airflow to suck the faeces into a bag, a bit like a vacuum cleaner does. Now, if the bag broke somehow, then the "Shit hit the fan!!".
Awww no! the bag burst and the shit hit the fan!!!.
by Marcus Rosenblat January 8, 2007
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When something goes TERRIBLY wrong.
After I opened the door to the Portal to the other dimension - about five or six two headed, green dog-like animals jumped out of it and started devouring everything. In other words - shit hit the fan.
by Gvazdas April 24, 2010
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Term used in Halo 3, when someone is getting pretty pissed off and about to beat some serious ass and throw around some insults.
"Ya, shit hit the fan pretty early in the game, and i owned some serious ass last night."
by Darkrage November 28, 2007
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