Ask him to pull out

"Wait, please wait, don't...don't come inside of me...pull out...It's dangerous...I am not on the pill... I might... get pregnant." I anxiously stare at him with my hazel eyes hoping he will come to his senses and do the right thing.

Mark utterly focused on his quickly building climax hears the fear in my voice and pauses in mid stroke.

"Lisa don't be a chicken now! I've already allowed you to fuck my boyfriend. Of course he will cum inside you and sperm you good. After all for a guy that's the best part. Pulling out now would ruin the whole experience. Do you agree?" Tiffany hisses.

"Yeah and don't you know that pulling out is a sin? If I remember it right god did struck Onan dead for spilling his seed on the ground or something." Stacy chips in visibly amused. "Don't worry Mark, she won't get pregnant. It's okay to cum in her, to shoot all of your sperm into her Pussy."

She sits down next to Mark and reaches over and cups his swollen, cum filled balls in her hand, squeezing gently. The effect was immediate, the sudden additional stimulation to Mark's testes pushes him over the edge.

"Ah fuck! Here it…Comes…Oh! Ohhhh…" Mark groans in ecstasy as he pushes his cock inside me as far as it would go, leaning into my cunt until his balls are pressed against my butt and his cockhead is kissing my cervix. I can feel his cock expanding and contracting rapidly, shooting spurt after spurt of hot cum into my defenseless womb.