Spontaneous Cumbustion

The process by which, through the ingestion of an unruly quantity of phosphorous, one's ejaculate spontaneously erupts into flames upon expulsion from the penis causing widespread fear and panic.

Dave and Marie were dating until Dave's spontaneous cumbustion all over Marie resulting in a sudden case of the funerals.

by Diction.net February 24, 2015

spontaneous regularity

(n.) diahrrea, often of the explosive and unpredictable sort.

What Donald thought was a fart had turned out to be a bout of spontaneous regularity.

by Blenderhead91 April 10, 2009

spontaneous

Taking a risk, living life to the fullest, no plans, "don't think just do". To be spontaneous is to be the most relaxed go with the flow and have fun person, you would never get mad if plans changed you would get excited because than it would become spontaneous.

"Hey what do you guys wanna do tonight?"-dana
"We had those plans to go see the 11 o'clock move"-Celeste
"Why don't we get in the car and just drive and see where we end up going or what we think of."-cassidy
"Let's go it will be a spontaneous adventure,forget the movies."-dana

by lily123456 February 15, 2012

Preventing Spontaneous Human Combustion

To let one rip
First coined on the hit show:south park

ex:

Man:Dude that was sick it smells like eggs...
Dude:Hey man just preventing spontaneous human combustion here...

by Fucktarded Scarecrow August 1, 2009

Spontaneous Mouth Birth

Spontaneous Mouth Birth (SMB)

Drinking/Eating something so fully and completely vile that it will cause pregnant women to immediately vomit the child through the mouth, giving birth orally.

Often times the side effect of drinking a friend's specially crafted "micro-brew style beer" Like a mulberry beer.

Essentially, vomiting horribly...

My wife took a sip of your micro brew and had spontaneous mouth birth . It was THAT BAD!

by Decrata September 3, 2013

spoontaneous

waking up in the middle of the night and spooning your significant other for no particular reason(or maybe your just horny)

My wife was surprised at how spoontaneous my behaviour was this morning.

by caseybob February 14, 2010

Spontaneous Orgasm

When somebody (male or female) suddenly becomes very happy and begins to shake and make incoherent sexual noises.

Bob: look at that freak over there, what the hell is he doing?

Fred: Dude, he's having a spontaneous orgasm

by George Danforth March 31, 2008