too sloppy's definitions
Two girls who are friends that have had sex with the same guy. This usually is found out by the sharing of sexual stories.
Carly and Tina are both really good friends and were talking with a group of friends about what they like and who they have had sex with. Finally finding out that they have both slept with Kyle therefore making them Nanook Sisters.
by too sloppy May 16, 2011
Get the Nanook Sistersmug.