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6.
The simultaneous impregnation of two hot females at the same time.

Both hotties must be knocked up at the same time to achive a Double Kill.
Does not count if only one of the girls is hot or if the second conception happens after the birth of the first child/bastard.

The Legend just achieved the coveted and honorable Double Kill on a cheerleader and weird art girl. Mad props yo, mad props!

"I sort of have a twin but he is just the product of my dad's Double Kill"
by HumanPerson March 11, 2006
 
1.
The term, which originated from Unreal Tournament, used to describe killing two opponents at the same time or within a few seconds of each other. It is usually said by the in-game commentator.

Is also used in Halo and Halo 2.
You killed 1rtehs3cks
You killed Swift_assassin
DOUBLE KILL!
by Seriphyn September 02, 2005
 
2.
When you kill two people with one shot in a video game. They are most likely side by side when this happens.
Digital Ghost terminated A. Noob with a double kill!
by cyanghost109 May 13, 2011
 
3.
The act of flushing a toilet after you used it, and then unknowingly flushing it again while it is still flushing, resulting in a failed flush attempt and a hollow flush sound. However, if for waiting 9 seconds, the crap is still in there, Double kill it.
All the other men stared awkwardly at Bob when he went for a double kill in the urinal. Why would he double kill? He wasn't crapping. It was completely unnecessary.
by Captain Jack Mehoff June 12, 2012
 
4.
In halo, if you kill two ppl withn 4 seconds of eachother you get a double kill
double kill,
triple kill,
killtacular,
kill frenzy,
killtrocity,
killimanjaro

HOLY SHIT! killimanjaro! i pwnzoreify
by phobiktweek March 18, 2005
 
5.
When you kill 2 people in a short amount of time in Halo.
I just got a double kill! Awesome!
by Napster August 30, 2004
 
7.
A double kill is when you have two lazy eyes going on at the same time. It doesent even look like there looking at you.
I saw this guy at Dunkin Donught who had a double kill.

I couldent keep a straight face while ordering.
by Hi Im Rob May 07, 2004