Eskimo Neighbor

A person who has participated in sexual relations at some time in the same geographic location as another.

I wonder how many Eskimo Neighbors I have after staying in this hotel.

Eskimo Neighbor

When you have sex with a sibling of someone your buddy has had sex with.

Dude! If I had sex with Heather, and you just piped her older sister last night, that means we're eskimo neighbors!

Eskimo Neighbor’s

Two people who have had sex with the same person but not in the same hole.

Dude 1: yo I fucked my homie Ryan in the ass the other day
Dude 2: YOOO I fucked his face yesterday!!!
Dude 1: guess Eskimo neighbor’s bro