After engaging in anal with a female using a condom, pull out but leave the condom in the anus. You then tell her to go take a shit. The shit comes out into the condom like "casing" sausage. Hence "Butt Sausage"
by Spacehead333 August 05, 2015
by Joe J. April 23, 2008
by Deep blue 2012 November 13, 2009