I am visiting Earth to probe you. The men on my planet have been extinct for millennia, and the women crave impregnation. It is my duty to harvest suitable sperm. I have studied human men for years. You are the one most compatible with my species. I am going to milk your cock of all its semen with my metal probe. You will no longer have to rely on the females of this planet for pleasure. The only time you will experience release is when I farm your cum. The women of my world are quite demanding. I will be milking your cock and prostate every month. In the meantime, you will be put into space chastity. I do not want you wasting your sperm. You are now my galactic property for breeding.