Siblings that are approximately 18 months apart, because Norwegians are more sensible than the Irish, and can use birth control.
Oh, your kids look so close in age, they must be Irish Twins. Good Lord No! They are Norwegian Twins
by Яif-San June 26, 2019

A twin fucker is a gay man or woman whose preference for a romantic partner is someone with physical features very similar to their own.
by shawke May 26, 2023

by Starrrrrrrkeiaha December 27, 2017

by SquirrellyStarfish June 18, 2021

by treeman800 January 24, 2011

-"Peter has never spoken to us since first grade."
-"Why are you so astonished, he's ultimately a better twin."
-"Why are you so astonished, he's ultimately a better twin."
by Misiaczek February 28, 2019

Two people born on the exact same day, in the same year, who despite having no blood-relation, understand each other almost telephathically.
That girl just gets me man. We act, think and feel exactly the same way. She's like my virtual twin!
by Adaephon November 24, 2014
