Bro in law 

When your only friends with someone because your gf is their friend.

"Hey man, wanna hit the club tonight?"

"Sure, is tom coming?"

"yeah why?"

"I've been trying to avoid him, he's my bro in law"

"aw that sucks"

Bro in law by Lemon Addict July 29, 2017

bro-in-law

A girlfriend that is a future candidate as one of your bro's wife.

Bro, you have to respect my girlfriend. She's possibly your future bro-in-law!

bro-in-law by xx_KittyKat_xx December 23, 2011

bro-in-law

A friend of a friend, coined from the word 'bro' and the 'in-law' suffix given to people where you have a connection reliant on another person.

Person A: Yo, Person B, I heard you have a bro-in-law with someone.
Person B: Sup Person A, I have multiple bro-in-laws.
Person A: Like who?
Person B: Person C, Person D and even Person E are all my bro-in-laws, all linked to Person F.
Person A: Kick-ass.

bro-in-law by Shrimpctionary May 11, 2025

Bro-In-Law

Your friends friend, basically a mutual but who the fuck wants to say that when you can say “Bro-In-Law”.

Guy 1: Yeah I had no clue who he was, but I dapped him up anyway because he was my Bro-In-Law.
Guy 2: What the hell is a Bro-In-Law?
Guy 1: it’s your friends buddy you don’t know.
Guy 2: oh so like a mutual?
Guy 1: i guess so

Bro-In-Law by PillCrosby December 26, 2025

Chick-bro-in-law 

This is one of your girlfriend or wife's sister or sisters. This relationship is one that is contextualized by using fratty language, such as referring to each other as "bro" and using the word "hella" frequently as an adjective in encounters where both parties are involved. The chick-bro-in-law makes your relationship a packaged deal.

Michael: "Hey bro you wanna hit the club up tonight?"

Joel: "No bro I'm getting hella drunk with my girl and chick-bro-in-law tonight, at this fancy restaurant. It's gonna be so bromantic."

Chick-bro-in-law by Chawwee2 January 3, 2011

Bro-inlawry

(Noun) The act or state of marrying one's best friend's sibling in order to become brothers-in-law with the best friend.

"John married Thomas's brother to legally become brothers with Thomas, achieving bro-inlawry."

Bro-inlawry by Tugglets United Front June 10, 2024