A person that can not or will not deficate in a public place. They have to go home or a familiar place to releave themselves; Excessively or affectedly prim and proper; excessively fastidious and easily disgusted. From the movie, American Pie, the Paul Finch character is called 'Shitbreak' by his friends because he can not take a shit in the school's bathroom. He goes home during the school day to use his own toilet.
"Shitbreak brings his own silverware to a restaraunt"
by TheDuke7509 January 14, 2005
A.k.a. Paul Finch, he is enemies with Steven Stifler, who calls him "Shit Break" due to his unusual defecation habits. This is sometimes confused for "shit brick". All characters that take part in the movies American Pie 1-3.
"shit break, get away from that ficus NOW!"
by Snyper00 August 18, 2008