When two males acknowledge having been intimate with the same female and remain on good terms, the men are now bonded by having shared the same igloo at one time or another.

This can lead to perks by making the information known to other males who you can network with.
Male 1: "Yea man, I got us a hook up at the show tonight, we don't have to pay cover"

Male 2: "Sweet, how'd you score that?"

Male 1: "Me and the door guy are eskimo brothers, remember that blonde girl from last weekend?"

Male 2: " props
by Jan theMan November 6, 2009
When you are your friend have slept with the same girl.
Salo and Enouy are both Eskimo Brothers multiple times.
by SS91 August 7, 2017
n. A male who has had sex with, and ejaculated inside of the same woman as a good friend. (not necessarily simultaneously)
I knew me and Jack were brothers for life, but when I found out he slept with Stacy we became Eskimo Brothers
by Chris240 October 31, 2009
An Eskimo Brother is a person who you have a threesome with.
John: So you and Dan are Eskimo Brothers?
George: Hell yeah we are.
by OG White Van November 4, 2016
Where you and your bro's all inhibited the same igloo.

You all sleep with the same girl.
Hey which bedroom do ya'll think she's going into tonight? Hell it don't matter we all eskimo brothers anyway.

That smell smells familiar, Man did you tap that shit too?!?! Guess were eskimo brothers now bro.
by ashane June 28, 2016
“When two guys have had sex with the same girl, they’re Eskimo Brothers"
“When two guys have had sex with the same girl, they’re Eskimo Brothers. You have to know what your eskimo family tree is. It’s how you get things done.”
by klimarac2 October 31, 2009
An eskimo Brother is someone who has slept with the same person you have slept with.

If you sleep with a girl and find out someone else has at some time slept with her you are that persons eskimo brother.
Pete slept with Gina. Adrian Peterson also slept with Gina.
This makes them eskimo brothers.

"dude I slept with heather the other night"
"sick I did it last year"
"man that means were eskimo brothers!"
by Ethan the guy February 11, 2016