The sisterly bond that is formed when two or more females have sex with the same male, thus making them "sausage sisters'.
Amber and Viki both had sex with roy, that makes them sausage sisters.
A relationship between two girls who have both had sex with the same guy. The female verison of Eskimo Bros
"I heard Ashley banged Jake, Miley's ex boyfriend"
"HA! that makes them sausage sisters"