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When you have sexual relations with two girls at different moments that also have the same birthday.
Dude, I was on Facebook the other day and saw that I have had sex with two different girls that have the same birthday. They are Eskimo Twins!

Eskimo Twin 1: Happy Birthday Eskimo Twin!
Eskimo Twin 2: Right back at you Eskimo Twin!
by The Daddio January 24, 2013
When you have sexual relations with a female/male and there is another male/female there gettin' it on with that female/male
Dude i cant believe we double teamed that bitch.

Dude i know it was fucking crazy!!!

Yeah that makes us Eskimo twins now rambro.
by lilseanzie1 December 13, 2009