A companion or friend, typically male, that has agreed in the event of your death to break into your house and delete your internet browser history. You in return, will do the same for them thus avoiding embarrassment when spouses or family members are going through your stuff after the funeral.
Me: Hey man, if I die, will you be my browser brother?
You: I'm honored you asked and yes I will. I've got so much nasty nasty on my computer that I wanna take to the grave.
You: I'm honored you asked and yes I will. I've got so much nasty nasty on my computer that I wanna take to the grave.
by ryatellsastory January 3, 2015

A word used to describe the relationship between two males, whom have found they had intercourse with the same male, mutually known by both (much like eskimo brothers).
Chad: Dood you will never guess who I banged last night.
Brad: Who?
Chad: I totally fucked the shit out of Chet!
Brad: Ohhh man no way! I totally fucked Chet in the ass too!
Chad: No way! When?
Brad: Remember when Chuck had that awesome Christmas party last year? Totally pounded Chet in Chucks champagne room then, he was so loose!
Chad: No way! That makes us unicorn brothers!
Brad: Fuck Yeah Unicorn brothers for life!
*Brad and Chad then preform a high five
Chad: Dood, Chet is such a butt slut...
Brad: Who?
Chad: I totally fucked the shit out of Chet!
Brad: Ohhh man no way! I totally fucked Chet in the ass too!
Chad: No way! When?
Brad: Remember when Chuck had that awesome Christmas party last year? Totally pounded Chet in Chucks champagne room then, he was so loose!
Chad: No way! That makes us unicorn brothers!
Brad: Fuck Yeah Unicorn brothers for life!
*Brad and Chad then preform a high five
Chad: Dood, Chet is such a butt slut...
by WIldBillBigCock March 27, 2016

Two biological brothers that acknowledge being intimate with the same female and remain on good terms. Similar to an Eskimo Brother, only they keep it in the family.
Male 1: Yo did you hear Jake and Josh are buffalo brothers?
Male 2: No way?!
Male 1: Yeah once Jake left the country Josh came across the pond and shagged the same girl.
Male 2: No way?!
Male 1: Yeah once Jake left the country Josh came across the pond and shagged the same girl.
by Rover19 June 7, 2019

by inventionzwey December 15, 2018

A friend who you just happen to call, or get a call from, while you are on the toilet having a bowel movement. The relationship deepens depending on how many times this happens.
Daniel: "Hey Man, what's up?"
Sean: "Oh nothing, just dropping a deuce."
Daniel: "Are you serious? I'm also dropping a loud mound of brown as we speak!"
Sean: "Jeez, dude. That is the second time that this has happened in a week!"
Daniel: "Yeah, buddy. We're Bowel Brothers!"
Sean: "Oh nothing, just dropping a deuce."
Daniel: "Are you serious? I'm also dropping a loud mound of brown as we speak!"
Sean: "Jeez, dude. That is the second time that this has happened in a week!"
Daniel: "Yeah, buddy. We're Bowel Brothers!"
by SotoMojo March 2, 2011

Derived from the concept of “Standing on the shoulders of giants” – a person who has experience and knowledge they can share with you openly and impartially to help you avoid mistakes, improve and successfully reach your goals.
by NDW41 June 20, 2019
