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22.
When something just goes wrong...really, really wrong.

"'Shyte' the bed" in limey.
1) Sorry I was late. My car just shit the bed on the way over.
2) If your friends shit the bed and don't get us out of Harlem in the Klan costumes...
3) Last night I thought I had to fart, but I shit the bed instead.

Use "Shyte" the bed" if you're limey.
by Matt Bittenbender May 02, 2008
 
1.
The utilization of the phrase varies by country.

1. (American) Failure of a device, usually in a non-repairable manner.
2. (British) Exclamation of surprised.

1. "My car shit the bed when the timing belt broke."
2. "The boss is back from vacation early!" "Shit the bed."
by Peri March 23, 2006
 
2.
1) Making a mistake that many other people recognize as a mistake.
2) Fucking up...really bad
Jeff shit the bed when he hooked up with Marty instead of Ashlea.
by J April 09, 2003
 
3.
1. verb. To die

2. verb. To become mechanically inoperable beyond the point of repair. See also, fucked, fubar.

entymology and usage: "shit the bed" comes from the unfortunate final humiliation when an animal's (yes, including human's) bowels completely relax at the point of death, causing the contents of the colon to be expelled. To use the term as a "euphamism" for biological death is considered to be in poor taste. It is more often colorfully used in definition 2.
1. That asshole Mr Jones never had a good word to say to anyone. At his funeral, the few attendees were secretly glad that he had shit the bed.

2. I was hoping that my car could be repaired, but the mechanic told me that it had shit the bed so I had it scrapped.
by Marc February 25, 2004
 
4.
A sudden and complete failure or collapse producing a profoundly negative result.
The Canadian 2011 Junior hockey team shit the bed in the third period against the Russians.
by jrott January 06, 2011
 
5.
When something quits working or is about to stop working.
Can I call you back? My phone is about to shit the bed.
by Dgrace420 July 09, 2009
 
6.
A form of exclamation expressing annoyance or surprise.

To cry out suddenly in pleasure or pain.

"Shit the bed, we've been burgled!"

"Shit the bed, that feels good!"

"Shit the bed, I have a terrible hangover"
by Phil1974 December 19, 2006
 
7.
to embarrass oneself privately or solely in the company of close family/friends. This term is so named because defecating on one's bed is truly embarrassing but only for those who are witness to such an event, which is usually limited to the individual who shitted the bed or a few additional people. Either way, the embarrassment can be contained to a manageable degree.
Jeff: "Dude, I totally shit the bed last night"
Mike: "What did you do?"
Jeff: "Fell down the stairs while my family was watching TV"
Mike: "That's not bad, at least you didn't shit the pool"
by Deshawn2Chainz July 26, 2013