The ongoing development of a relationship, usually between guys, that is far closer than that just casual friends.
Hey, man. You are new to the hood. It's going to take you a while to bro up with the other guys.
by Go with the bro December 20, 2016
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to man up,grow up,or hang with you bros and hoes
J- "you should probably start calling us bros from now on"
L- "yeah, maybe...."
J- "if you can man up to it"
L- "yeah, if i can "BRO UP""

by mike hudson March 29, 2008
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When you and your homie try and challenge another best friend group
Person a & person b - we are more iconic fuck off

You and your homie - OK FAGGOTS LETS BRO UP AND SEE WHO IS
by peteymcpeterton August 29, 2017
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Like big ups, but exclusively to & for bros.
A: Remember how I scored that chick? Gold.
B: Yeah man, I did all the talking & you just took her home.
A: Wingman Deluxe, mad bro ups.
by something clever November 1, 2013
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The awkward situation in which you and your bro are at a party etc. and he could get mad dome from a hot chick. But you can't leave to room or you are stuck in bed because you are so drunk and don't know whats going on. So you must Bro-Up and take one for the team.
Guy1-Me and Jimmy were at this mad rager last night... Some weird shit happened though
Guy2- What went down?
Guy1- Well jimmy was able to get dome from Linda but I was so drunk and I wasn't sure what to do because I felt trapped.
Guy2-So what did u decided to do?
Guy1- Well I decided to.. Bro-Up
Guy2-- DAMN word bra best mayne
by rowdy boy January 2, 2011
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A really hott girl that knows things about games, the internet, and music. This girl can chill with the guys and not seem out of place at all. She doesn't bitch about nonsense and is totally down with dirty jokes and poking fun. This girl looks like a total babe and acts like a total bro. Girls of this sort are difficult to spot with the naked eye, unless they give a clue like a cool retro t-shirt or some internet lingo. If you find one, capture it.
"dude your girlfriend is a TOTAL bro-up doll"
"dude i know, she kicked my ass at halo last night"
"where can i find one!!"
by mauiandshit1215 February 19, 2010
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A life motto for all bros to keep straying bros on the path of a true bro. Put on your backwards hat, hit the frat parties, and look for the beer bong, or go home and brush up on your bro-losophy.
Bro 1: I don't know if I want to party tonight.
Bro 2: Dude, Bro up, or Bro home. Now grab some Natty Ice.
by Dr. Lazy November 9, 2010
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