It should be one of the permanent Rules, that the slave must kiss the asshole of his Owner not only when ordered to do so, but if not explicitly advised otherwise, regardless of the time and place also always when f. ex. greeting, apologizing, agreeing, showing respect, asking permission etc - and this naturally apply also to any and all other people if the Owner of the slave so orders...
It should be one of the permanent Rules, that the slave must kiss the asshole of his Owner not only when ordered to do so, but if not explicitly advised otherwise, regardless of the time and place also always when f. ex. greeting, apologizing, agreeing, showing respect, asking permission etc - and this naturally apply also to any and all other people if the Owner of the slave so orders...