Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

Combustion 

The act of a material or substance breaking or falling apart.
When we pressed the launch button, our rocket just suddenly combusted. Six months for just one big combustion.
Combustion by XxJake474xX May 18, 2008

combustion 

When something goes off with a bang or an event was heavy
Yo, dat dance was combustion
combustion by guardian October 24, 2003

Combustion Engine Sex 

Combustion Engine Sex is when you have anal sex with someone who has a poopy butt

So basically you ram your combustion cylinder into their valves and poop splatters all over your dick and on the floor and walls
Dave: hello mike dont wipe i wanna have some mad combustion engine sex
Mike: hell yeah lets get it
*mike goes to bed with poopy butt*
Dave: OHHH IM BOUTTA COMBUST
*coems*
*poop explodes everywhere*

Shitaneous Combustion 

After eating lunch at the taco truck down the street, I had shitaneous combustion when I got back to work.
Shitaneous Combustion by Htos_Drol November 27, 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...

Anal Combustion

Any form of explosion just inside the anus. Could be the result of inserting and igniting gasoline or gunpowder, attempting to light a fart, or that Mexican food from yesterday. Depending on the strength of the sphincter, severe anal combustion may result in blowing out the anal socket or rupturing of the rectum.
I had pretty bad anal combustion after that spicy 15 bean soup--it almost blew out my sphincter!
Anal Combustion by b007y514y3r March 11, 2016
More from Urban Dictionary

briefcake 

"Did you check out the briefcake in courtroom C?"
briefcake by Ben Frey April 6, 2006
Word of the Day on November 3, 2026
Brought to public attention by Bob Woodward and Carl Bernstein in the book on the fall of Richard Nixon, All The President’s Men, ratfucker was Nixon’s term for a political operative who sows chaos among opponents; an agent provocateur. It is thought to have originated among campus political rivalries at USC, and seems to have some usage in the US military.
Along with Nixon’s other ratfuckers, Roger Stone caused fights at otherwise peaceful Democratic Party protests to generate a false narrative that the Democrats were violent and dangerous.
Ratfucker by Ricky Ramjet November 2, 2017
Word of the Day on November 2, 2026

countrypolitan 

Term used to describe someone who is a mix of both rural (country) and urban (metropolitan) lifestyles/upbringings. He/she is typically equally comfortable in both settings and is able to seamlessly slip back and forth between the two, appreciating the characteristics of each.
That ol' gal of mine drives the 12 lane freeway during the week and a John Deere on the weekends. She likes opra and the Grand Ol' Opry. I love them countrypolitan women.
countrypolitan by MOChick November 7, 2006
Word of the Day on November 1, 2026

Witch Bath 

A bath consisting of a variety of slats, oils, soaps or any other added ingredients such as fruits, milks, herbs or any other spices for health or beautifying benifits.
She brought home alot of stuff and took it to the bathroom. She must be taking a witch bath.
Witch Bath by carnieboy30 October 26, 2020
Word of the Day on October 31, 2026
Load more