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Cumbust

To have performed sexually at such a profound level that the utilised orifice has caught fire due to friction.

This could be down to a number of factors:
1. Overly fricative appendage surfaces, e.g. a scaley penis
2. Use of a lube with an insufficient smoke point for the activity, e.g. high-velocity anal sex lubricated with Butter (176°C) rather than Ghee (250°C) that meets an emulsifier, e.g. 'Baby Gravy', thus overcoming a natural fire retardant, e.g. 'Fannybatter'

Example 1 is pure friction but usually occurs before Cum enters the picture so is not relevant to this analysis
Example 2 is the true Cumbust in that it is down to the complex chemical interations of these substances when extreme kinetic energy is applied to them
Bob - Jesus, did you see what happened when Bill banged Brenda's Bum hole?

Babs - Nope, wtf?
Bob - She Cumbusted, flew into low earth orbit, left a trail of winnets in the night sky that looked like a meteor shower
Babs - Shit, talk about blasted into maternity by a guided muscle....
by Sick Man Fraud December 16, 2022
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cumistry

1: a science that deals with the sexual composition, structure, and properties of sexual substances and with the transformations that they undergo. Sexually.

2a: a strong mutual sexual attraction, attachment, or sympathy <they have a special cumistry> b: interaction between people working together in bed, or the champagne room ; specifically : such interaction when harmonious or effective boning occurs <a team lacking cumistry>
"Ali, whats the cumistry like between you and Derek?"
"Lets just say... I'm cleaning it off right now...explosive."
by MLC Jr. June 17, 2009
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Spontaneous Cumbustion

The act of two males performing a donkey punch and white dragon in unison on a female during an mmf.
"We gave Dorothy a spontaneous cumbustion last night. Her head exploded and a geyser of blood and cum splattered the walls."
by Gide October 2, 2006
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cumbuster

1. Term referring to a male who busts cum, i.e. likes to suck dix
2. Gay person
3. Often used as a general insult.
1. Dude, Steven likes to pants people. What a cumbuster.
2. See that guy in the plaid jacket? He's a cumbuster.
3. DON'T TK ME YOU FUCKING CUMBUSTER.
by Grif April 9, 2004
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Cumbust

When you get so excited that you ejaculate without notice.
Keep ordering me oyster shooters and I might just cumbust.
by RJ3000_ August 16, 2019
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cummist

guy 1 : "Yo bro i'm a cummist"
guy 2 : "You're fucking disgusting"
by hugh_g.rection January 30, 2022
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spontaneous cumbustion

Cumming without being aroused and with no sexual provocation.
by tanukisanyo May 9, 2005
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