to suddenly, and with no apparent reason, burst into flames and within minutes become a human cinder. a.k.a. SHC
defoe was running so fast towards the opponents penalty area that he suddenly suffered an acute spontaneous human combustion
by theWestHamfan November 4, 2003
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Usually said after relaying a chain of events to make them sound more interesting.
"Then I went to the computer and logged onto Facebook, and I suddenly spontaneously self-combusted."
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Spontaneous Erection Syndrome, sometimes called SES, is a disease that most men suffer from. It is a disease where a man will spontaneously get an erection, while not aroused.

SES usually occurs in a situation where the sufferer could either become embarrassed, or possibly look homosexual.
Tim: Dude! how'd you get a boner? We're watching Mythbusters for christs' sake!

John: I dont know dude, must be my Spontaneous Erection Syndrome.
by Marcus129 February 24, 2010
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An unplanned but obviously pre-choreographed outburst of dancing within a normal, non-party setting by a group of three or more people, usually including singing, as in most films classified as "musicals." Often abbreviated as SSD.
"In an attempt to avoid a fight which they knew they couldn't win, the smaller of the two gangs immediately broke into spontaneous synchronized dance, hoping the movements of their bodies and voices united in song would make the larger gang reconsider their course of action."
by Tom M. October 1, 2007
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The occassion when a human being may spontaneously burst into flame with no external interference. Generally happnes to the aged. Most victims do not survive, and combust when alone. Therefore, there are not many witnessess to spontaneous human combustion, or S.H.C.
However, there have been people who have suffered S.H.C and survived, albiet for only a short while afterwards.

S.H.C does not tend to leave much in the way of bodily remains; most victims leave just the lower leg, a singed hole in the floor, and a pile of greasy ash.
Reasons for this are still only theories, but the extreme heat required to reduce a human body to ash in the space of minutes is intense, and the flames act unaturaly.
In one such case, an elderly doctor spontaneously combusted whilst at home alone. When found, his kneecap and ashes where in the basement, and his foot and slipper left on the lip of the hole on the floor above. His aluminium walker, that should by all means be a puddle of molten metal, was fully intact, including the rubber tips.

S.H.C is not a proven phenomena, and is not a recognized cause of death.
The old doctor apparently died when he spontaneously combusted. Many blamed the phenomena, spontaneous human combustion for his unnatural death.
by Roadie Farla May 8, 2007
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When you see a girl so hot, that you cant control your man parts, and you jizz in your pants unexpectedly
That girl walked past me and as i watched her walk away it made me spontaneous combust-a-nut!

The Stripper was grinding on me and before i knew it, spontaneous combust-a-nut
by Supraman221 February 25, 2011
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When one wears the clothes they wore to bed to school or work the next day without changing. In some cases, the individual puts on the clothes they'd like to wear the next day on at night and sleeps in them.
I had zero stress this morning about what to wear because of my spontaneous pajama day.
by loucaster November 17, 2014
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