1)Can design amnesia after getting drunk (look above)

2)A special technique that can be done in a small group of persons, making the "victim" inconscient for a few seconds.
Really fun activity (as a "victim" and as a "helper")
1)Omg, do you remember something from the party last night ? I had a blackout :/

2)Some guys are doing blackouts in the park, go try it out.
by Chobbby November 7, 2011
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1) adjective; Type of person who'd make you laugh at your mothers funeral. 2)adjective; Hella sweet person who'll help you even if you need help ALL the time. 3) noun; A hacker.
1) 'That guys so boring, hes not even a bit blackout!'
2) 'Ask him, hes a hella blackout guy!'
3) 'That person who keeps pwning me is such a blackout!!'
by Alanalicious February 22, 2008
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A band that seems promising when they have a song about playing video games, but it all goes to hell when one hears the singer due to his godawful whiny and nasally voice.

The song "Just Wanna Play Video Games" became a small internet meme and inspired various covers by various garage bands, singing in a similarly-irritating voice.
Guy 1: Yo, you wanna go to that Blackout concert?
Guy 2: Hell no, they suck! I'd rather hear the Jonas Brothers!
by King of Jellybeans July 14, 2009
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(verb or adjective) To drink excessivley at the end of ones working day.
"I'm pretty sure I'm going to blackout today"
"It's Blackout Wednesday!"
by tonto goldstein June 22, 2006
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A campaign level on Call of Duty 4, first one if you dont count prologue, in the level you need to help Nikolia, a Russian Loyalist spy in the Ultra nationalist camp, he is caught and to be executed.

You kill a few guards before meeting with Sgt. Kamarov, a Russian Loyalist, he is going to assault the Ultra Nationalist base, and you get to help, Captain Price gets irritated and holds him over a edge to find out where the spy is.

Eventually you get to the building where he is and Gaz cuts the power, you use night vision and go into the house, there are about 4 AI's in there, the last one with a flashlight, after you kill him the flashlight shines on Nikolia, after getting out you get in a helicopter, he says

Nikolia: "Have the Americans assaulted Al-Asad yet?"

Captain Price: "No there invasion starts in three hours, why?"

Nikolia again: "The Americans are making a mistake, they will never take Al-Asad alive"
"Blackout is the first(ish) level of campaign in CoD 4
by Illestemia February 6, 2009
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When you get shit faced drunk and don't remember having sex with a black chick!
KeKe said she's pregnant with your baby!
OMG! I must have had a BLACKOUT!
by RidiculousNick January 25, 2014
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When a dude or chick is too dark skinned to be seen in the dark.
Jasil is a prime example of a blackout.
by Dudinator April 3, 2008
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