You scream in orgasmic delight as your lovers dick slides past your cervix, ramming the back of your womb. "God, you really do lock on." He grunts as you happily squeeze his dick, his entire length lodged inside, and you let out a long moan as he slides slowly back out, rubbing your tight walls. His bulbous tip gets caught on your cervix, but he pulls it through with minimal effort, stretching your secind opening with ease. He slowly picks up speed, sliding into and out of your womb with increasing speed, and you yank on the chains connected to your nipples to heightne the pleasure. Finally, he rams you one final time, and your vagina locks up tight as you orgasm with him, your stomach swelling visibly. Ot takes a full thirty seconds for him to finish depositing, before pulling out of you as you moaned and gaspedyour nipples being yanked without your help by the chains attached to your enormous stomach.
"Birth me some healthy children, sperm tank." He says, before vanishing into the crowd and leaving you rubbing your huge midriff happily.