A console video game (a first-person shooter specifically) which is better than, or claims that it is better than, the games in the Halo franchise. Perfect Dark claimed this and failed, Killzone claimed this and failed. Call of Duty 4 is indirectly claiming this and might fail. No game has yet been able to claim the spot of being better than Halo, and to claim to be a halo-killer pretty much destroys any slim chance they might have had.
"Dude, Perfect Dark is gonna be a Halo-killer."
"No, it's not, you are wrong, asshole, Perfect Dark blows."
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A person who shoots his own team mates in Multi-Player games for the fun of making others mad.
example: My friend Joe is a Call of Duty Team-killer.
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1.one who kills cereals
2.another name for Montana
1. Oh no! My Cocoa Pebbles are dead! Must've been a cereal killer!
2.Where do you live young man?
Why I live in Billings, cereal killer.
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A title given to a person who makes a previously cool thing uncool, including things like music, websites and blogs. People could include parents, stupid famous people, and advertisers.
"Why haven't you been on Twitter lately?"
"You didn't see? Barbra Walters made an account and talked all about how cool it was on the news."
"Wow. What a cool killer."
"Totally."
"I went to a party, and some cool killer just starting giving this gay speech about global warming. We all just got up and left."
"Haha, what a fag."
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Someone who won't let you talk about a TV show around the water cooler at work, because they have it recorded.
"Hey did you guys see the Office last night?"
"Shh! don't say anything...I have it on my DVR."
"What a cooler killer!"
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Killer muffins are those muffins you put in your mouth but go to far to soon and they make you choke.
Bella had some killer muffins and didnt relise then gave one to daniel :( poor daniel but he is alive just he almost wasn't
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Jamaican dancehall artists, known for his more agressive tracks.
Fan 1: You hear the new Bounty Killer song?
Fan 2: Yeah, chune can gwaan.
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