Do you know Spence's mammary glands? Spence mammary glands are like the G-spot of the breast. This is probably the first work that blames Spence's mammary glands. Yui Hatano, who has appeared in numerous AVs, was so excited that she said, ``This is my first time! It hit me like a bolt of lightning.'' It feels so good that she ends up incontinent. Spence Breast Specialist,