To Snipe Someone In The Head In A Video Game Or I Guess In Real Life.

It Has To Be A Sick Shot Before You Can Drop The Term Any Normal Snipe Is Not Good Enough.
*Tom Headshots A Rookie In A Game Of Halo*
Tom: Ohhh Shit What A Phat Brain Drain.
Frined: That Was a Fucking Sick Shot
by Jonathan R Potts December 6, 2007
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Going on and on like a bloodstain phrase written by Marianne Faithful. Rambling so much you empty the contents of another person
She was such a brain drain babbling on as she was
by Dgnflyinca August 28, 2018
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Brain drain:

When someone receives every written or spoken phrase as having a possible sexual reference or meaning.

When your mind is in the gutter; pervasive dirty thoughts or usually sexual in nature.
"Sorry, I've got non-stop brain drain today."
by JB21007 March 7, 2023
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The guilt that comes with leaving your city for a more affluent area after college, despite the best attempts of your professors and others to prevent it.
Paul: "I had this crazy dream last night. I was on trial for planning to move to Chicago, but the jury was made up of my professors. When the judge asked for the verdict, one of them stood up and said, "We have no verdict. We're just extremely dissappointed in him."

Bob: "Sounds like you have a serious case of brain drain guilt bro."
by Simon Dylan May 27, 2011
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