To fall asleep inadvertently, especially when one intends to do something else (such as to work or study).
I would have been finished with the essay due for my English paper, but I blacked out at 7:30 (PM) and just woke up (it's 11:30 PM). I guess I'll have to pull an all-nighter. I hope I don't black out again this evening.
by an elite October 20, 2009
Get the black out mug.
so i was at this wild house party and the next thing i know i wake up next to some guy i don't even know. man, i HATE blacking out.
by Jennifer Worm January 10, 2008
-Dude what happend to you last night?
-Well the last thing i remember, i was at this bar talking to this chick and now im at work with no money and now i have this nasty rash, i guess i musta blacked out.
-Well the last thing i remember, i was at this bar talking to this chick and now im at work with no money and now i have this nasty rash, i guess i musta blacked out.
by thatguyoberder September 29, 2007
when you consume so much alcohol that your brain goes to sleep but your body gets all "eye of the tiger" and soldiers on
by Ainslice February 16, 2011
A state of mental and physical impairment you enter after reaching a blood alcohol level of .20, which causes you to act in an uncontrollable manner. Unfortunately, the black out enables you to recall any of the events that occurred while acting so recklessly, and almost always guarantees awaking to wounds you do not remember getting or next to a person you do not remember sleeping with.
by rach February 7, 2004
getting so drunk/fucked up that you no longer are aware of what you are doing or whats going on. . . but find out the next morning because what you did was so obnoxiously funny it bares repeating
by Lohsl September 27, 2004