look up anything, like your first name:
1. blackout
Blackout is the term used to describe when a person is so drunk that they wake up the next morning with temporary amnesia, no recollection of what they did the night before. It can be used as a verb or as an adjective.
verb: "Oh man I blacked out so fast last night, and then I woke up in this ugly girl's room."

adj: "I was so blackout man, everyone was wasted."
by Jack Dec 9, 2004 add a video
2. blackout
KKK member's worst nightmare
by SWZ Sep 25, 2003 add a video
3. Blackout
When a friend drinks too much (or not a lot, but is a baby girl) too early in the day, and completely forgets all of the embarrassing stuff they did all day.

Also a wonderful re-make of Halo 2's Lockout, redesigned slightly for Halo 3.

When a friend grabs your dick while you're wearing sweatpants.

When a friend head-butts you through revolving doors.

When a now former friend makes out with your dog, and tries to feel it up.

He is a BLACKOUT.
4. Blackout
When electricity is "out" to specific regions or cities.
The Blackout of 2003 was the biggest blackout in North American History and took place in New York City, Detroit, and many other areas in the Northeast of the USA, and in some areas of Canada. The cause was unknown after 24 hours, which is right now, go figure.
by Aquajeff Aug 15, 2003 add a video
5. blackout
Blackout is the state of which all college kids strive for during any night of the week. Total lose of all memory which leads some retarded fuckin stories.
Tom: "Yo, I was so blackout last night."
Pete: "Ya thats probably why you fucked that ugly hoe."
Tom: "What?"
6. Blackout
The most amazing Transformer ever! In the Transformers 2007 movie. Likes to bomb the Qatar base and prove how much of a BAMF bawse he is. Really good with producing massive shock waves with sonic cannons. Has a partner called Scorponok that's a GIANT METAL SCORPION.
Decepticon and known as "Megatron's Loyal Hound".
Cool temperate, cool gadgets, epic killing machine, totally the greatest Transformer ever.
And he's not to bad lookin either.
Dayum, did you just see Blackout beat the slag out of Starscream?
7. Blackout
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.
rss and gcal