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Okay so everybody pretty much knows what a bro is, but what do you call girls who act like bros and wear sperrys and rock nantucket reds?? A brosis. It's not some boil or sore dont worry. Its just a girl who acts like a bro.
A BroSis describes girls who wear sperrys, rock nantucket reds, throw lax around with a boys stick, rock lax t-shirts, and able to party like a bro.
BroSis by Laxbro 95 November 24, 2011
The California-born, politically correct alternative to and/or replacement for the word "bro". Although the target of reference is usually female, it is perfectly acceptable to address a subject of any or unknown gender, as the word itself is unisexual and non-descriminatory vs male, female, or other.
1.
"It ain't no bro; it ain't no sista; it's'a brosis, brosis!"

2.
Man: "Dude, man, brosis, that ass is 'hella dank'. I'd hit it like an abusive husband."
Response from woman or subject of unknown gender: "Fuck you, pig! But I appreciate the fact that you did not call me bro, my bro."
brosis by Forrest Harding July 18, 2006
the desease of being a 'bro'. When you're such a 'bro' and think you're so rad (high fives all around) that regular people feel smothered in your ego and attitude. Most guys catch brosis around 17 and dont loose it until about 23.
Common symptoms are thinking you're rad, clowning on everyone else, refering to everyone as 'bro', and always talking smack about bitches and getting laid.
That guy had total brosis.

There's way too much brosis in that crew for me to handle.

Leave your brosis at home and come have fun with us.
brosis by Alex SuperTramp November 29, 2007
A more scientific sounding term to describe a person who is going through a physical change or transitioning from male to female or vice versa.
You can’t use male pronouns for Jake anymore. He’s going through brosis and prefers using a female pronoun.
Brosis by tenaciouszee December 15, 2019
verb
1. to combine the minds of 20 students on a Discord server in order to rapidly find the answers to a test or piece of homework
"The students brosissed the heck out of the ELA test, 30/30 in just 3 minutes"
brosis by reevas March 22, 2021
Where a male sasly takes the brother approach, whilst strategically planting the seeds of love in the otherwise oblivious "sister" victim, and allows 14 years to pass before finally reaping the produce of a perfectly sown seed
i think hes on a brosis ting bruv, you no say, hes on it!
Brosis by The Bricklayer September 12, 2007