"Yes, YES!!" she screamed. "GOD, OH GOD RICK!! FUCK ME BABY, FILL UP MY CUNT, MAKE ME YOUR WHORE!! OH GOD, OHGODOHGOD, AAAAAAGH!!!"
"Mom, I'm going to cum." I started to pull out of her, but she grabbed my ass and pulled me to her.
"NO!! Don't you dare pull out, DON'T YOU DARE! I need to feel you cum inside of me, Rick, I need it!!" She wrapped her legs tightly around me and began to buck up against me even faster, milking my dick, willing me to cum.
"OK, Mom, here it is... right now... Unngh. Ahhh! AHHH!! Oh God, Mom! OHHHH!! I'M CUMMING!!" I closed my eyes and rode the waves of my orgasm. I know that there's really just a little fluid in an ejaculation, but it felt as though I were pumping quarts of jism into my Mom. The sensation was incredible; I almost passed out from the pleasure of it.
"YES, BABY, YES!!" she screamed. "CUM FOR MOMMY!! CUM WITH ME, BABY!! OH, GOD, YES, I CAN FEEL YOU CUMMING INSIDE ME!!!"