During the war the OSS commissioned an American shrink, Walter Langer, to do an analysis of Hitler. He spent several months amassing every shred of info he could find and interviewing every person outside of Axis territory who had ever met the man. He then used all this info as essentially the patient on the couch and wrote a report. It was finally declassified and pubished as "The Mind of Adolph Hitler" in 1972.
According to Langer, being urinated and deficated in the face was one of Hitler's sexual turnons. Langer does predict that the most likely end to Hitler was pretty much what happened. I read it about 20 years ago. It's a fascinating book.
The only connection I could make between shit and a toothbrush mustache was GG's brother Merle, who is famous for sporting a big overgrown one...hence the question, which must have seemed a bit off the wall.
"Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."