The point in the night where you must decide to either stop drinking (back out) or drink past the point of remembering what happened (black out).
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she keeps giving me cups of everbeer.. its everclear and beer mixed. i guess its blackout or backout time
by bytesmith January 27, 2011
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When you are so drunk and hate everyone at a party that the only option is to go home and drink alone. Essentially getting blackout, realizing other people suck, and then backing out of having to hang with them.
DBag 1: Dude where did Michelle go?
DBag2: I don't think she likes any of the options here, so she did a blackout backout.
by iythgdsffghuiojp[ February 20, 2016
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