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1.
When the Shit Hits The Fan.

To survialists and preparedness people, this is the big disaster. Normally connotates the total break down of civilization and social order.
In a SHTF situation you will need reliable transportation to get to your retreat.
by Ron D July 10, 2005
 
2.
Shit hit the fan
Chaos, out of control
(boy hears parents yelling)
"Boy, shit hit the fan now"
by fool January 18, 2005
 
3.
"Shit hits the fan"

"SHTF" or "When shit hits the fan" is a popular phrase referring to the ultimate situation in which a man would need to try and survive off the land. The collapse of civilization.

The phrase is commonly used among survivalists and generally most firearm collectors or outdoors man.

See: apocalypse, end of the world, FUBAR, Survive
Guy 1: "Hey, that's a nice machete.

Guy 2: "Thanks. I'll probably use this in a SHTF situation.
by BiGoDeViN October 06, 2012
 
4.
SHTF

Shit hit the fan

It's what happens when you disobey the SWMBO
" I stayed out too late drinking with the boys, and boy did the SHTF when I got home."
by DuckNKover October 13, 2009
 
5.
"Shit hits the fan"

Complete civil unrest, the end of the world as we know it. An event that the beaten, republican losers are praying for now that their party has has been marginalized.
There will never be another republican president, so I hope the SHTF soon because it's already over for my party.
by lol@survivalists April 10, 2009