n. A pejorative term for just about anybody who happens to be a douche. Doesn't have to be related.
Mike: "Jerry was at the gym today doin' what he do. Ol' brother-in-law talked my ear off for like 20 minutes and I couldn't think of a good enough excuse to get out of there."

Joe: "Yeah, that dude is jerk."
by laker fan June 1, 2011
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When two guys each have sex with a different full blooded sister.
what's up Joe, I just banged Becky. Really? I banged her sister! That makes us Eskimo brothers-In-Law!
by Mushroom Stamper April 10, 2015
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When you think about your friends girlfriend while masturbating.
Hey dude i was thinking about your girl while i was jerkin it.
Dude i was thinking about your girl while i was jerkin it too.

we are so eskimo brother in laws
by Lilseanzie December 9, 2009
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Sister’s husband and spouse’s brother at the same time.
My double-brother-in-law is a good person.
by Rwopazaq November 24, 2019
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When one jerks it to their friend's hot sister.
I totally rubbed one out to Greg's sister last night; that makes him my eskimo brother in-law now right?
by the leagueeee December 21, 2010
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this expression comes from Hebrew. it is originated in the TV show Traffic Light (Ramzor), and has a similar meaning to "my man". If you meet someone you like, you would go: "What's up, our brother in law?" (Ma kore gisenu?)
Q: "What's up, our brother in law (Gisenu)?"
A: "it's all Sababa!"
by Hefer Guri December 7, 2009
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