A word unpronounceable by Microsoft Sam.
Microsoft Sam: My roflcopter goes soi soi soi soi soi

You: What the hell is swa?
by The one and only guy July 15, 2009
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To smoke the ganja.
Used in some parts of Australia (the hektic cunt area)
"Hey lad come 4 a qik soi brah"

"Yerr m8 that was a mad soi"
by Fgt420blzit March 30, 2016
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In the thai language, small sidestreets branching off a main road.
There's a great massage parlor on Soi 8.
by Superboner November 18, 2010
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Soi - The Most Word Sic Moist Tonar Variation of Cool.

If you're reading this you are obviously not soi. In this decade of fast food an ready meals people need to look for healthy alternatives. This however is not limitted to the foods we eat, but to our very lifestyle. Soi is an example of that.

Soi gets it definition from Soy. Much like Soy Milk, being soi offers all the characteristics of full phat coolness, without any of the calories. That means you can be all phat and word up yourself without letting it get to your head, causing brain hemmoraging and eventually leading to strokes.

Soi is written this way due to evolution of language. It was originally adopted by the Broven Street Massive, the healthiest hood in Detroit. After a while gangstas cruising along in their low riders adopted the hand signals to remind the pimps that they were Soy. However when it came to making the Y with their fingers, they came to the conclusion a verticle finger represented a virtuous conclusion.

And thus Soi was born.
Gangsta: Check out mah woman!
Down-With-It Gansta Pimp: THAT BITCH IS SOI IMMA TAP THAT ASS

or, for the more conservative

Consumer 1: Hmm, this milk is tasty, yet I have no gained any weight! What is this stuff?
Health Store Clerk: That shit is soi yo!
by Master of Tonarity January 21, 2005
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Assertive way of saying bye, but not quite equal to 'fuck off'. Heard when chavs are in the area and ironically amongst skaters and emos.

Origin largely unknown - its been suggested it stands for 'Swivel/Sit/Spin on it'.
"Soi inabit - I'm off home."

-OR-

"I'm gonna have to soi."

-OR-

"Yeah, he was being a twat so I was like Soi!"
by El Beave July 21, 2008
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Arby: What the fuck was that?

Chief: My ROFLCOPTER, it goes soi soi soi soi soi soi soi.
by Brian Collins March 30, 2008
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