1 definition by verbalfonders
Two women who share a common male in their sexual history and are on good terms with one another. The female equivalent of "Eskimo Brothers."
Girl #1: How'd you get the store discount on that skirt?
Girl #2: Oh, the clerk and I are Igloo sisters. We both banged Craig.
Girl #1: Nice pull, lady! *fist bump followed by explosion*
Girl #2: Oh, the clerk and I are Igloo sisters. We both banged Craig.
Girl #1: Nice pull, lady! *fist bump followed by explosion*
by verbalfonders September 23, 2014