to insert your finger into your anus, then wipe the shit off onto an unsuspecting person's top lip. kinf of like the dirty sanchez.
by tony February 24, 2004
The stripe/s (often resembling the shape of Adolf Hitler's mustache) left on the back of the toilet seat by an inconsiderate defecator
Phil left another shitler mustache on our toilet seat. I don't know whether he's a Nazi or just a regular asshole that doesn't bother to clean up after himself.
by bravestsirrobin June 11, 2015