Described by Post Malone himself, his definition of Saucin', which has been known as Post Malone's signature word, being used in his song White Iverson, which has over 300,000,000 views by the time I'm writing this definition.

Post Malone : Saucin, to me, is a way that you carry yourself that makes you an individual. They know what makes you YOU, what makes you unique and what makes you better than somebody who hates you.

He says that the city with the most sauce is Dallas.
White Iverson Lyrics
Hook
Saucin', saucin', I'm Saucin on you
I'm swaggin', I'm swaggin', I'm swaggin', oh-ooh
I'm ballin', I'm ballin', Iverson on you
Watch out, watch out, watch out, yeah
That's my shot, that's my shot, thats my shot, yeah
Spendin', I'm spendin', all my fuckin' pay
by mellow tf2 July 13, 2017
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Saucin is when your just the flyest of the fly or what ever you have is fly
yo these shoes are saucin alie
by C'Zar July 19, 2009
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to get jiggy in some form, to grind on random objects, commonly plants and cats, and to eat cultured milks.
Christina sure was saucin' it up at her neighbor's house.
by Christinasgayneighborscats August 24, 2009
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To sauce mean to flex in a rich way and be the best dressed around
Mya "Damn you see dmo that boy got sauce he saucin hard"

Arie "yeah him n his whole sauce gang they getting too much money out here saucin like that"
by Detroit hipsters August 5, 2018
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Something that Ricky does 24/7
Ricky are you lost in the sauce.

No I'm in the sauce. I'm saucin right now
by @r56sisk February 2, 2016
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