collateral splatter 

When you take a violent diarrhea fart shit where you get poo splatter and poopy toilet water all over your ass cheeks. Sometimes can be so bad you just have to go straight from toilet to the shower to clean off the poo splatter

I just took a dump like I have cholera. It was so explosive I experienced a high degree of collateral splatter...

collateral splatter by Mountain Dew Code Retard October 16, 2021

Collateral damage 

Needless explosions causing loss of woman/children and or irreplaceable artifacts

"Generic military rank is celebrating the capture of whatever city in small warring country by coalition forces done with minimal collateral damage"

Collateral damage by Pheidippides December 26, 2003

collateral invite 

When you extend an invite to a group of people in a room and there are people there you don't want to invite, but have to because it's the polite thing to do.

A: what the hell is he/she doing here?

B: collateral invite.

A: oh. i'm sorry.

collateral invite by urbanwordsmith September 11, 2010

Collateral Knowledge 

When one searches for answers regarding a specific subject, but ends up learning about several others in the process.

Yeah, I was just trying to find out how to pronounce "Boise", but ended up also learning about the molecular structure of a diamond lattice. Talk about collateral knowledge...

Collateral Knowledge by McHammerface October 15, 2011

Collateral Damage 

When one intentionally farts on another person intending on only harming them, but other people in the room suffer from the foul flatulence.

gassy friend: Hey Mark! Take this!
(farts on Mark)
Mark: eeeew!
John: oh no! Collateral damage!

Collateral Damage by Mandalore96 November 6, 2010

collateral damage 

The act of passing on an std twice in one night

i caused some serious collateral damage at the bar last night

collateral damage by the friendly farmer November 29, 2010

Collateral divorcage 

Harm done to innocent bystanders by the explosive dissolution of a long-term relationship.

My friendship with Naomi didn't survive the split between Mary and me. She was collateral divorcage.

Collateral divorcage by Dictionnaire Diabolique September 15, 2017