2
1. To destroy the perpetual funnyness of something funny by use of a lame, moronic comment.

2. To get a powerful ammount of positive feedback. Often used in comedy, Rock and Roll shows, and anything else stage related. Popularized by Manowar.

3. To unplug or turn something off.
1.
Person #1: Are aces high or low?
Person #2: They go both ways.
Person #1: Hahaha.. he said they go both ways.
Person #3: Hehe..
Person #4: Like a bisexual.
Person #1: *stares*
Person #2: Yes.. That was the joke.
Person #3: You killed it.

2. "The whole purpose of playing live is to blow people's heads off,". "That's what we do; that's the energy of this band. We're out there to kick ass. We're out there to turn our Joey DeMaiogear on and blast. We're out there to kill. That's what metal is. Anybody who says otherwise is not playing heavy metal. We will melt your face!"
- Manowar bassist Joey DeMaio

3.
Highway Patrolman: Kill it.
Driver: *turns off the engine*
Highway Patrolman: License and registration please.

or

Guy #1: Kill your PS2 so we can play Super Smash Brothers Melee.
Guy #2: Hold on you pushy bastard.. I'm trying to play Snake Eater here.
*pointless game debate ensues*
by Barry the fucking PIRATE. September 14, 2005
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3
Used as a reaction when something is funny.
Person#1:Fuck your fat head, long neck, lil body ass!!

Person#2:(Laughing)...KILL!! That was funny as shit!
by Imanitite July 30, 2008
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4
The number of different people one has had sex with
Guy 1: I fucked that chick last night. Now I have four kills.
Guy 2: Nice!
by dudewheresmylatsyrc December 27, 2009
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5
When a person tries to make something funny, but they fail; a.k.a they are called an ozkill or Oz
WOW Ryan! That was such a kill that you should join us for the first annual ozkills on Friday.
by Coach0 May 14, 2015
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6
dank, one hitter quitter, high quality weed, not compacted, fluffy buds, KB
That shit is some kill.
I love to stuff blunts with kill.
I bot a pound of kill.
by the_infinitesimal October 14, 2004
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