Although it is massive, it is not the physical pleasure that drives Owner’s training of and demands on slave. To force the cock all the way down slave’s throat despite her difficulties to take it, is a beautiful and natural act of establishing and reinforcing hierarchy. If Owner demands it, she complies irrespective. she knows she never has a choice, and that is beautiful. It is even more beautiful, to train her to master it every time, and perform dutifully knowing deep inside that is it is the most natural act for any women to please her Man. It improves slave and makes her truly pleasant and useful. And it makes Owner proud of His little girl.