When two men have had sex with the same woman.
After Billy Bob Thornton and Brad Pitt both had sex with Angelina Jolie, they became Eskimo bros.
by iamthefuckingmanunderstand August 7, 2011
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1. A joke from "the league"

2. When 2 guys manage to stick their dicks in the same girl on seperate occasions.
by smallmouse12 April 16, 2022
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When two guys have sex with the same girl in the same night, at two different times. This is because in ice fishing a guy will create a hole, then another guy will fish in it during the same day, but the next day the ice freezes over.
Dude one: I hade sex with that girl last night!
Dude two: Woah! Me too!
Dude one: no way! Now we are Eskimo bros!!
by Parker_Lee March 22, 2017
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When two bros simultaneously penetrate both the vagina and anus of a single woman with their wankers, they become Siamese Eskimo Bros. Can also occur when both bros simultaneously insert their wankers into just one of said orifices, although this is much more difficult depending on the size of the talliwhackers and the diameter of the females vagina or anal cavity.
Jeff and Tom sealed their friendship when they double penetrated Sally by running train on her pussy and anus at the same, thus becoming Siamese Eskimo Bros.
by FapDaddy September 2, 2014
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When a girl sucks two dicks and gets them off in one night, then kisses them both after, they are now considered Eskimo brothers.
Jesse, from Christian school, says, "she sucked your dick too? And we both just kissed her? That means we are Eskimo bros now!"
by Kekala June 30, 2022
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