One who smokes your weed and then proceeds to rant on and on about how it was a bad idea to smoke (i.e getting caught or pulled over) instead of enjoying your weed. Also will blame others for him/herself getting caught and make you buy eyedrops and/or spray.
Ted: Man those were dank headies we got
Bill: No this isnt cool you have to go in walgreens and grab eyedrops im to afraid to see someone i know.
Ted: Dude your being a stoner buzzkill
by biglrip March 29, 2009
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You have your i-Pod/i-Tunes on shuffle, you're jamming out doing your everyday thing, then BOOM! song switches to a completely irrevelant song and ruins your exuberant mood.
Frank: Man, I was rocking out to "The Chili Peppers" earlier I got in my usual calm, moviated mood then BOOM! ..my wife's "Rocket Summer" starting playing and I just lost all hope..

Bob: Ahh! Frank I'm sorry. Sounds like a iTune buzzkill.
by Limabina May 2, 2009
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A unwanted, stupid, waste of space who ruins everything.

Quite a harsh insult..
You are a living buzzkill, you're like the little black bits at the bottom of coffee or a advertisement. No one wants you..
by Th3 0v3rse3r December 19, 2016
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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.
by TheBurmeister June 29, 2011
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A person who interrupts a normal conversation to describe their current exploits in the game of Minecraft. This person is oblivious to the fact that no one cares.
Anthony: Who do you think will become president in 2012?

Liz: Romney will never make it.
Kyle: Gingrich is a smart man.
Phil: Oh my god, I just found a butt-load of red stone!
Anthony+Liz+Kyle: (shaking fists) MINECRAFT BUZZKILL!
by starshiptrooperrrr January 1, 2012
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an individual who always denounces exotic or diverse cuisines or kills the mood at a good meal by discussing personal examples of intestinal distress
Billy is the group's designated culinary buzzkill. He killed the mood at a dinner party just last week, making sure we all knew about his tricky stomach. "I love Itallian food," he said with an irksome smile, "but it doesn't usually like me back."
by Sexy Simian November 29, 2010
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What you can call a tottal stranger, weirdo, E-Tard, sketch ball who abruptly kills any good time. Commonly seen using his most favorite buzz kill move, tickling random girls below the belt, and severely frightening them.
Ian: Hey! wanna peanut butter cracker sandwich!

Weirdo: YA!!!! If i could figure out what peanut-butter is slang for i would probably buy some??

Hott Slut: Its not slang its peanut-butter! it'll give ya energry!

Weirdo: Hey there!.. are ya ticklish, " grabbing at inner thigh through car window."

Ian: WoW! relax Buzzkill lightyear why don't you come find out if I'm ticklish.

Weirdo: duh. I had ta?

Hott slut in back seat: What a fucking Jabroni!
by therealpdaddy October 25, 2011
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