I did an interesting full restraint, Latex hood, and Scat session today. My slave complained that he could not smell my Ass as I sat on his Latex clad face. I removed the hood and shat directly in his mouth then rolled the hood back over his head, face, and mouth. Needless to say he was a good boy and didn't complain with his mouth full.

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Sorry about resurrecting an old thread, but this is absolutely something I would at least think about and possibly say in session.
... and I find the response to be exquisite!