kill joy 

People who are douche bags and have to ruin the fun of everything, kill the mood or shoot everything down.

Jamie: "Naw, I think I'm going to skip out on the concert, chillin' with friends and going camping."
Caitlin: "Jamie you're such a fuckin' kill joy!"

kill joy by Caitlin July 15, 2005

KILL JOY 

Peepz who kill the fun by wanting to do something else or calling it a day/night too early (like me).

"Ay I gotta go. I gottta see my friend so...just watch the rest of GLADIATOR without me, aightz?"

"You're such a KILL JOY!"

KILL JOY by Joshiro007 February 24, 2003

kill-joy

A person who intentionally takes the joy of another person and brutally murders it with no remorse.

Girl: Yesh, finally Full Metal Alchemist. Oh how I've longed for you. *kisses television*
Mom: No FULL METAL ALCHEMIST. Japan is evil.
Girl: Geez Mom, you're such a kill-joy!

Girl: Yesh, No school because of snow!
Weather Man: Looks like school is back in session due to the sudden elevation of tempurature.
Girl: Geez Mr. Meteorologist Man Guy, you're such a kill-joy.

kill-joy by Buttonsinfallcolours August 9, 2006

Grandma Kill Joy 

This is a nickname given to someone who is cynical, hates fun, and hates it when other people have fun. Originally derived from the stereotypical view of an angry grandmother who thinks her grandkids shouldn't be allowed to play and have fun.

Don't be such a Grandma Kill Joy, come to the party! It will be fun!

Grandma Kill Joy by Jackie | Treehorn December 16, 2010

Dunning-Kruger’s Kill-Joy 

A guy who, due to ego or low intelligence, refuses to acknowledge that he didn’t get understand the joke, so instead resorts to insisting that there was never a joke in the first place. He will often criticize the intelligence of the person telling the joke on the basis that they were serious.

“Make sure not to use satire around that guy! He’s Dunning-Kruger’s Kill-Joy, he’ll trap you in an argument you never actually made!”

Dunning-Kruger’s Kill-Joy by CountSnoww November 18, 2021

Kill The Joy 

A small band from the central Florida punk scene

Have you heard mila by Kill The Joy?

Yeah! Are they gonna make more music?

I have no idea.

Kill The Joy by GarbJunky79 December 5, 2022

Joy kill 

The dumbass way some dyslexic and drop outs think kill joy is pronounced

Chee boe you dropped my chop bowl you’re a joy kill

Joy kill by slobski on my chopski April 9, 2022