Define Kill Joy Meaning

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!"
By Nevsa
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!"
By Angeline
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.
By Gabey
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!
By Willi