When the shit hits the fan 

When a hidden or contained problem (the shit) is suddenly exposed or spirals into utter chaos (shit making contact with rotating fan blades) causing a change of tactic from problem elimination (disposal of shit) to damage control or abandonment (cleaning of all traces of bits of scattered of shit or escaping as situation is now unmanageable)

When the shit hits the fan, we’re going to need to call in a cleaner

When the shit hits the fan by BLEVE March 20, 2013

When the shit hits the fan 

1.)When all hell breaks loose, Pandora's Box is opened, when you're screwed big time, and/or when yer fucked over.

2.)The moment at which fecal matter hits the spinning blades of an electric fan.

3.)A really good Circle Jerks song featured on the cult classic film Repo Man.

We just get by however we can. We all gotta duck, when the shit hits the fan!

Goddamit boy, how many time have I told you to stop shitting in front of the fan?

When the shit hits the fan by Holy Dragon Sword May 14, 2004

when the shit hits the fan 

When the truth is discovered the consequences will be felt.

You're in big trouble when the shit hits the fan.

when the shit hits the fan by VAKI5 May 7, 2005

when the shit hits the fan 

When something really bad is about to go down. The brief moment before a world of pain is brought down upon someone

When someone says Kelly has small eyes but doesn't realise she can hear them. That's when the shit hits the fan.

when the shit hits the fan by didntsaykellyhassmalleyes August 17, 2010

when shit hits the fan

"Shit hitting the fan" is an expression used to describe a moment when things are getting out of control.

When shit hits the fan I'm out of here.

when shit hits the fan by Mini mojito July 13, 2014