The random growling noises caused by the gut that warn the growlee a bathroom visit is imminent.
Colleague: "Jesus, that sounded like a tank driving past."

Growlee: "Actually that's just some Brownian Motion going down. I'm a ticking time bomb."
by RhythmJunky May 11, 2009
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The act of performing a Brown-eye whilst in a cartwheel.
That was some crazy brownian motion... he got the whole crowd...i cant believe he could cartwheel the whole field naked
by Lincz October 19, 2006
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When toast or other cooked food begins to become brown across the entire top of it, and you know it's perfectly toasted.
Has dinner commenced Brownian Motion?
by DellPaxton July 21, 2011
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degenerate brownian motion, a racist term for people with brown skin from south and south-east asia, used by white Australians.

Instead of calling them brown directly, hide behind a scientific term brownian motion, so that when accused of racism, scientifically gaslight and hide behind the term. In the name of science.
Athor: Look its Akhmed our boy originally from Paki

Akhmed Sulisto: Im Indonesian not Paki.

Athor: Whatever fucking degenerate brownian motion, fucking cunt

Akhmed Sulisto: Did you call me a degenerate brown guy?

Athor: Did I call you a fucking low IQ brown guy? No of course not.
Athor: I was referring to brownian motion, a scientific chemistry term.

Akhmed Sulisto: Cool, totally my bad sorry, was just being too sensitive. Don't mind me.

Athor: dbm ! dbm ! dbm !
by Rangaaabearddd February 5, 2023
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The motion given by two individuals participating in the fabled art of browning.
Roger: my anus is red raw this morning...

Pierre: Far too much brownian motion, not enough lube, old boy
by The Brownian February 4, 2022
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