In the Street Fighter game series, Akuma's Shun Goku Satsu move. During the manoeuvre, the screen blacks out and Akuma performs a series of devastating and demoralizing attacks. Can be abbreviated to B.O.B.
Groups of friends will often participate in "B.O.B. Matches", in which each player selects Akuma. The first player to land a successful Blackout Bingo will have exclusive rights to Akuma for a time period specified prior to the competition.
"Man, Mitch hit me with Blackout Bingo in the very first round tonight! I'm banned from using Akuma for one whole month!"
Getting completely annihilated to the point of blackout (complete memory loss). The Bingo portion refers to the excercise of attempting to patch together the activities of a drunk-runaway with only fractured memories and input from others.
I was at a staff Christmas party, vaguely recall wrestling my boss, got in a cab, woke up on an unfamiliar front lawn, recall flaging down a cop car for a ride home, woke up on the couch with peanut butter on the counter, the floor, my pants & the bread maker obvious sustained an impact. Bruising later determines its was an elbow... Blackout Bingo.