When the man (or "Master") gently rubs his thumb around the woman's anal region to get all of her muscles relaxed enough for penetration. If she tenses up, the man, or "Master", will stop and correct her, telling her to relax and this continues until her anus is completely relaxed and ready for penetration.

Penetration is not always necessary. Orgasm and/or full anal stimulation can be accomplished simply by the rubbing and massaging of the anal region.

When you eat dirt for the first time and leave your family to build a shack in the woods