Mistress Sarah - Do It Better, Slave

So arousing to have the privilege of worshipping My feet and legs covered in silky pantyhose. You're so pathetic and good for nothing that not even locked in the chastity are able to fulfill My the privilege of worshipping My feet and legs properly. Freedom must be earned ... Will I decide to still keep you in My harem of subbies or will I replace you with a better slave?