Jeff the killer 

A Creepypasta weirdo who has fangirls for some odd reason

How is Jeff the Killer hot?

Jeff the killer by ISHFWILF October 29, 2018

Werewolf Killer 

A Werewolf Killer is slang for a Coors Light beer. What kills a werewolf? A silver bullet......and what is a Coors Light? A Werewolf Killer!

BARTENDER: What can I getcha?

COOL PERSON: I'll have a round of Werewolf Killer's for the boys!

Werewolf Killer by IVquad June 28, 2008

Team killer 

<Noun> Computer gaming slang.

A person who, during an internet computer game, kills or damages their team mates intentionally in order to either help the other team (to which they may also be referred to as 'spies') or just to be a cock sucker and/or n00b.
May be abbreviated to TK'er.

CHIEF: "Master K is such a fucking TK'er."
MASTER K: "OMGWTF n00b STFU!!!11"

Team killer by Stuart Fletcher November 2, 2004

Cereal Killer 

Someone who is on a diet and only eats cereal

My cholesterol was so high, I was forced to become a Cereal Killer

Cereal Killer by itzritz April 7, 2009

Cotton Mouth Killer 

Soda with Lots of bubbles. Prefably Pepsi in a can and very cold. this works great! seriously, try it.

(the bubbles seem to make it go away)

im gonna get some Cotton Mouth Killer from the fridge, want any?

Cotton Mouth Killer by Vincenzo December 3, 2003

iPhone Killer 

Little is known of the iPhone Killer. Having never been seen in person, it is impossible to describe its appearance, nor has it even been proven to truly exist. There are many versions of the Legend of the iPhone Killer, each of which is wildly varied from the last. However, each and every version agrees that "it's coming in a few months."

Did you hear? (Insert Google product here) is going to be the iPhone Killer!

iPhone Killer by Swarley123 February 16, 2010

tree killer 

someone who always uses an excessive amount of paper. If they're writing an essay in pen and make a mistake, they ball up the paper and take out a new sheet instead of just crossing it out. If they're drawing something and they mess up, they take out a new sheet instead of just using the eraser. You get the idea. The opposite of a tree killer would be a tree hugger, one who is very frugal in their paper usage.

Just imagine this: if your teacher gives 10 papers a week to each student and there's 20 students in your class, that's 10 papers x 20 students x 7 class periods x 36 weeks of school. That's 50,400 papers used by that 1 teacher every school year. What a tree killer!

tree killer by JT the man March 31, 2008