Mark's dick expand inside her fertile womb.

Julie could feel his cock begin expanding inside her, and shuddered as his voice whispered in her ear, "Ohhh, Julie! Here it comes, baby. I'm gonna cum inside your tight little pussy. Are you ready to fill you up with my cum?" The thought of accepting his sperm inside her made Julie nauseous. Obviously, she wasn't on any kind of birth control.

Panic seized her... what if she got pregnant? "Uhhh... Uhhh... Ohhh, please, d... don't do it inside me! Please, I... I'll do whatever you want, just d... don't do it inside me! I don't want to get p... pregnant!" Mark grinned, "But Julie, that's the whole idea. What fun would it be if there weren't a possibility of knocking you up?"

Julie moaned in defeat as suddenly Mark drove his cock into her as deep as he could, piercing the soft resistance of her cervix and lodging inside her fertile womb. She could feel Mark's dick expand inside her. He held her ass tightly against his groin as the first stream of potent sperm launched into her tight baby factory.

She felt his body jerk and the hot pressure of his cum erupted into her body. Stream after stream bathed her insides with his potent seed and filled her womb with a hot flood that seemed to last forever. Julie had never felt a man cum inside her before Mark, and she groaned with orgasmic sensations as he thrust his cock deeper into her cunt and his cum filled her womb.

As his manhood continued to plant its seed deep inside her, her hand reached down to fondle her clit. This sent her over the edge, and to her humiliation, her body launched her into a massive orgasm. As Julie orgasmed around the thick shaft buried inside her, Mark continued to thrust into her until he was satisfied that her cunt had taken all the cum he had to give her, for the moment.