1. When you are brained (grabbing your nuts and squeezing them so they resemble a brain and shoving them in someones face)by multiple people at once.

2. The performance of said act.
1. So I was sitting there making out with my chick when I looked up and Larry was braining me so I turned my face only to be confronted by Kurt's nuts.

2. When Larry passed out, the guys and I gave him the brainstorm of the century.
by Lexicon Devil August 17, 2008
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To excrete feces through the anus; to defecate. Usually performed in public restrooms at the workplace.
Josh was brainstorming in the stall next to me while taking a business call on his cellular phone.

I gotto brainstorm, but the bathroom smells like curry!
by Moses Maloney May 16, 2006
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Receiving head from multiple girls/guys at once, and proceeding to "cum a storm" on those giving brain.
Last night was so lit, I had 5 girls in a brainstorm!
by ItzWanner December 12, 2016
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When the girl give you head, you cum in her mouth and she throws it back up on the tip of your dilznick.
by Gainful May 22, 2009
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When two pull their nutsacks taught and push their testicles together, giving the illusion of two brains.
I feel a lot closer to Dave ever since we had a brainstorming session last weekend.
by secretly white December 18, 2019
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