When you accidentally say something that turns out to be a lyric from a Pink Floyd song.

similar to/derived from a freudian slip
Me: Don't worry about it, people like that are just bricks in the wall.

Carrie: Ha! Floydian slip!
by the Marquise October 17, 2007
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When a White person briefly speaks in ebonics or commits senseless violence caused by either a lapse in judgment or by taking Fentanyl.
My brother made a Floydian Slip yesterday after listing to one too rap albums. I'm worried he'll start taking Fentanyl and printing counterfeit $20 bills.
by Heinrich Müller November 28, 2021
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A person who pretends to be a fan of the British rock band (the) Pink Floyd (sound), because they think it Is hip or cool; usually girls trying to get attention or otherwise note from guys. To determine if they are a true Floyd fan, just ask who Syd Barrett is.
Man, I started dating her, and it was great 'cause she liked all my music, but on further inspection, she was a Fake Floydian
by Sweglerdsp00kz November 22, 2015
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Accidentally writing/improvising a riff that sounds similar or exactly the same as a Pink Floyd song.
A: Dude, Steven Wilson totally ripped off the acoustic part from Dogs and called it his own song

B: Nah, it was probably just a floydian slip
by jaaxxxax August 14, 2011
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