Spontaneous Emojiconing 

The use of iPhone Emojicons spontaneously through a text message. Generally a lengthy message, and could result in a "Spontaneous Emojicon War" through text between two or more people however a winner always emerges as it takes time to type each message and generally one person will quit and find something better to do.

Wow, you have a lot of emotion all of the sudden! Spontaneous Emojiconing that is!!!!!

Spontaneous Emojiconing by friendlesscoolkids December 7, 2010

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.

Spontaneous Cumbustion 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.

spontaneous regularity by Blenderhead91 April 10, 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!

Spontaneous Mouth Birth by Decrata September 3, 2013

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

Spontaneous Orgasm by George Danforth March 31, 2008

spontaneous meat ejaculation

A spontaneous meat ejaculation is an unplanned and sometimes unavoidable ejaculation which occurs due to consuming a capacious volume of meat. The amount of ejaculate it produces is normally overwhelming when compared to normal ejaculations. It normally occurs 10-20 minutes after meat sweats begin.

Phil and Bruce finally broke into meat sweats at the All You Can Eat Meat Depot. They continued stuffing their faces, knowing full well they would eventually be experiencing a spontaneous meat ejaculation. They were happy they would be sharing this moment together.

spontaneous meat ejaculation by oscillation October 23, 2010

spontaneous retardation 

An uncontrollable reaction to a particular event or stimulus where there is a total loss of most brain action.

1. As Bob and Joe were walking by the park, they had a sudden urge to play on the jungle gym due to spontaneous retardation.

spontaneous retardation by Better than Bacon? Impossible. January 10, 2010