I pulled my hand out, tucked my thumb in between my four fingers, and started to enter Katie again!

I pulled my hand out, tucked my thumb in between my four fingers, and started to enter her again. I applied constant pressure as I pressed my hand in. It slid in to the first joint, then the second joint, then to the knuckles. Katie started to pant and groan.

"Oh, God, what is this! It hurts! I can't imagine what you are doing!"

I didn't answer her, and I knew I was stretching her pussy more than it had ever been stretched before. I pushed my hand in past the knuckles and felt Katie's pussy squeeze me, as pleasure started to overtake the pain. She was panting now, head hung back, legs spread wide open, pussy rocking forward trying to get more of my fist inside her. I spread my fingers inside her pussy to open her up more.

I pushed forward and my wrist slid in. Katie was moaning and gasping, and I knew that she would soon climax. My fingers curled over themselves inside her love tunnel, making a fist and starting to fuck her with my arm. She was in a frenzy now, wailing, tears of pleasure streaming down her cheeks. She was holding her legs as wide open as she could. I moved my hand up and down, side to side, stretching her while pleasuring her. I got the piston action going, fucking her with my fist as her pleasure mounted.

At last she screamed, coming all over my hand, her vagina squeezing my fist over and over, milking it, spasming again and again. She finally relaxed after a few minutes of intense orgasm. She said, "Wow! That was the deepest, most fulfilling orgasm I've ever had!"