Fuck your mother's cervix

As far as you remember, you hadn't had a chance to use your cock for pleasure since your mother started her experiments. You have no memory of having sex or self-pleasuring with whatever genitals you had before. With your size change happening so quickly after, you hadn't had a chance to use them at a normal size. Although fucking your mother was worrying you a bit morally and wasn't viable at this size. The fact your mother wanted you to crawl up her vagina took away that worry. Although her vagina was way too big, her cervix seemed to be perfect for your new size. You were already fully erect from working your way inside your mother's warm, moist and aroused vagina.

Scrunching up, you lined your erect cock up with the small opening in the ring muscle. You began pumping in and out of your mother's cervix, hugging the muscle to stay in place. You could hear your mother's breath and heart rate increase. You could also hear soft moans from your mother. You felt the walls of her vagina getting slick with arousal. Your vagina also became moist with arousal as the feeling in your cock built. You felt your orgasm building and building. Your mother's breath became fast, heart racing; she started to move rhythmically with your movements inside her. You cum, your cock shoots cum directly into your mother's womb. You squirted down the back of your legs, your fluids mixing with your mother.