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The sexual act of defecating in another's mouth while one wears a Tuxedo, or other formal wear.
"Babe, I got out the tux!"

"Oh boy! Get ready for Formal Brown!"
by Cuck80085 August 06, 2021
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Sep 9 Word of the Day
the thing that you don’t have when you’re phones percentage is over 20
phone: why don’t you go to sleep tommy it’s 2 in the morning?
tommy:why don’t you die you dumbazz
by lik_frls_dis.me February 12, 2020
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2
(verb ) To defecate in a partners mouth while wearing formal wear preferably a tuxedo.
Hey Daniel wanna formal brown later?

Me and Debora formal browned last night.
by ID production crew July 31, 2021
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