Buzzkill 

Captain Marvel.

Captain Marvel is the biggest buzzkill of our century.

Buzzkill by MemetheLeft March 14, 2019

Buzzkill 

The most asshat-iest of all Asshats.

Bro, I was explaining the meaning of that song and she ruined it for all of us. She's such a buzzkill.

Buzzkill by 22gamer April 27, 2021

Buzzkill 

Something that spoils or ruins a good mood. It can be an event or a person. This event/person tends to destroy the vibe and cause everyone to feel awkward or uncomfortable. It can tend to irritate or annoy others in a usually deliberate attempt to ruin the mood.

Samaara is such a buzzkill she always ruins the vibe

Buzzkill by NobmasterVc06 August 3, 2023

buzzkill bitch 

A certain individual, normally of the female gender, who tends to ruin ones' good mood upon recieving a text message or phone call from the individual.

Hey man, what's wrong?

I just got a text from my ex. She's such a buzzkill bitch.

buzzkill bitch by Jerome Washburn December 9, 2008

Buzzkill cunt 

A 5'9" white bitch broad that ruins all the fun and does not like seeing others laugh and have a good time. Therefore, the broad makes everyone in a pissy mood and makes them hate her.

My wife was being a buzzkill cunt today at work and so I stood up and got the fuck out of there. I drove off in my harley motorcycle into the beautiful sunrise and I didn't want to look back. However, a little while went by and I thought real hard about what I should say to her so I texted her "You are a fucking buzzkill cunt" and we are not on speaking terms right now.

Buzzkill cunt by sinnee August 15, 2018

Buzzkill Betty 

1. someone who takes the fun out of things or stops some sort of shenanigans

Joe was a real buzzkill betty when he stopped the shindig.

Buzzkill Betty by Steve-O June 11, 2004

Buzzkill Bomb 

A sentence or phrase uttered by somebody that ruins the heat of the moment (or the "buzz").

Alex: I can't believe they let us in the theater for free!
Bob: Yeah they must think we're VIPs!
Carl: No, they're letting everyone in for free today.
Alex: Wow Carl, way to drop the buzzkill bomb.

Buzzkill Bomb by TheBurmeister July 1, 2011