A Canadian euphemism for a bathroom (n) or (more commonly) the act of using a bathroom to deficate (v); this term is seemingly rooted in German (i.e. "Scheiße-Haus"). Differs from its North American counterparts in that one "makes" a scheiße, rather than "takes" one.
"I need to hit the hausen. Gotta make a scheiße."
"The hausen beckons. Scheiße time."
"The hausen's a-callin' this mornin'. We're entering scheiße country."