We've been having sex for years and you still haven't impregnated me. It's time for a different approach. One I'm sure will work. Fortunately, it doesn't involve you other than me telling you all about it. You see, I need a real man, an alpha male with a big cock and strong potent sperm. A man like your brother. Tonight I'm going to fuck him and share all the details with you. Our second night together left me in a pool of his cum and you can watch it drip out of my exhausted pussy. I know it worked. I know I'm pregnant finally. And when the baby comes you can be the doting parent while I continue to fuck your amazing brother.