Any event where you get drunk. I don't mean just drunk. I mean DRUNK. When your common sense and your BAC play a game of chicken, and the common sense loses-drunk.

Also can be used to refer to a party, concert, night or any event where this activity takes place en masse.
Get Todd some aspirin. He committed a pretty hefty brain cell genocide last night.

Tanya's wedding ceremony was beautiful, but the reception was a brain cell genocide. Like, we're talkin' Rwanda-bad. Gray matter holocaust.
by Darren C March 27, 2008
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The things that seem to up and skedattle while I'm trying to take a test
by Pialinist December 23, 2021
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Something you say when you agree with someone or share the same opinions.
Because I agreed with her opinion, I said “We share brain cells on that one”
by tinyneverland18 October 2, 2020
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Something you say when you agree with someone or share the same opinions.
Because I agreed with her opinion, I said “We share brain cells on that one”
by tinyneverland18 October 2, 2020
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A description of what remains of one’s mind after slogging through excessive work, living on low sleep or poor nutrition, or dealing other people’s bullshit.
Wow, I did nothing but grind on schoolwork from August to December. My last two brain cells are going to play some Minecraft.

My last two brain cells are running on Chicken McNuggets for breakfast and 3 hours of sleep, so I probably won’t be able to finish the report by the deadline.

My boss whines every day about how lazy I am, even though I work 80 hours a week. My last two brain cells are not cut out for this shit.
by WeAlsoDoSomeTrolling October 28, 2022
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When you go too school and they ask you " what is 3x*9g/7^r.33333333333333333333" then goes over to your desk and says "HURRY UP LARRY THE ANSWER IS DO AT THE END OF CLASS"
Teacher: " what is 3x*9g/7^r.33333333333333333333"

You: Shut up, my one brain cell is working very hard right now!!!
by greencreeper244 March 20, 2018
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