A Soy Boy Brigade is when a group of effeminate males gather and start exuding their submissiveness.

Can also be used to name one person - where one person, somehow, holds the cuck and effemininity of multiple males in one body
Ah sh*t the Soy Boy Brigade is here.

He's the Soy Boy Brigade.
by DaphBabbez April 26, 2023
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A gay asian male who sits down to urinate
Oi, Bing Chao! You’re a fucking soy boy cuck, ya poofter
by NiggerManblack December 21, 2018
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A Soy Boy is what a rich, teenage boy is called. They flirt with girls and many girls have crushes on them, but Soy Boys usually have girlfriends but they keep they're flirting casual.

How do you spot a Soy Boy? Do you have that one boy in your class that stands out? Does he wear clothes that have come from Abercromie and Fitch? Does he usually hang out with other popular girls and occasionally girls who aren't so popular? Does he flirt with them even though he has a girlfriend? Well sorry girls, he's a Soy Boy.
Lindsay: "Hey, David's kinda cute! I think he was flirting with me earlier."
Monica: "Lindsay, David is a huge Soy Boy! Even if he talks to you, don't fall for him. He's already dating someone anyway."
by phoebe glitz June 20, 2015
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Used by characters in "It's Always Sunny in Philadelphia" to describe someone who is a vegan, demasculinized, beta male, cuckold.

You typically associate these guys with vegans, hipsters, man buns/man ponies, typical beta male. The type of guy you'd cuckold and he would like it.
Get your hands off me, you soy boy beta cuck! I will never get a man pony!
by Karab okama July 19, 2020
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A person who continues to wear a mask even though daddy Jason Kenny said they don't need to anymore
Look at these soy boys/girls wearing masks in costco
by Numblenore March 9, 2022
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Bad boy soy boys (BBSB) are soy boys who are bad boys, the only difference between them and a normal person is that a BBSB will eat better food and date hotter chicks
Gaston is the baddest bad boy soy boy on the block.
by DATMOFO February 28, 2018
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A short blonde Male that has sexual relations with his family and think he knows everything.
by Tyge mcqueen July 15, 2018
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