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 September 08, 2015
by Joe J. April 22, 2008
by Deep blue 2012 November 13, 2009