I am an experienced toilet slave and there are two ways i am used.
For punishment and for routine toilet duty. For punishment, I must masterbate before i am used so that there will be no sexual pleasure for me... only the taste of shit. This is very difficult to consume when i am not excited so i am usually severely beaten for motivation - it works.
For routine toilet duty, my Mistress basically takes me for granted and simply shits in my mouth. However, She is sweet enough to tell me how proud she of me being able to eat her shit and if i should start to gag, She is very encouraging and tells me to concentrate on pleasing her and not to be selfish. For routine use, i am always hard and She will frequently use Her feet to play with my cock.
i am pleased to be Her toilet - i wish i could do more for her.