On her hands and knees.

"Since our wives are watching us procreate we should give them a better view than my ass between your thighs," I joked. "Do you mind getting on your hands and knees, Deborah?"

"Not at all," she nodded before climbing up on the bed and getting on all fours at an angle that Sam and Susan could see both her hanging tits and upturn ass.

I knelt behind the buxom brunette and held my raging cock in my hand. "Ready?" I asked.

"Yes," Deb replied. We looked over at Susan and she nodded with excitement in her eyes as she held my wife's hand.

I aimed the tip of my cock at Deborah's wet pussy lips and pushed my hips forward. Deborah clenched the blanket and stared at her partner as her tight cunt stretched from my thick cock sinking deeper into her.

"How do you feel?" Susan curiously asked her partner.

Deborah bit her lower lip for a moment before answering. "Good," she sighed. "It's nice to have a big, fat cock in me that's not rubber!"

"Thanks!" I said and girls laughed. "I guess we should start making a baby?"

Deborah nodded and I started easing my cock in and out of her with my hands on her ample ass. I glanced over and saw Susan excited at the sight of me taking her lover from behind -- one of her hands wandered down between her thighs.

"Harder," Deborah moaned, pushing her ass back against my thrusts. I got up from my kneeling position and squatted behind her so I could give Susan and Sam a nice view of my cock pistoning in and out of Deborah's pussy and my sperm laden balls swinging like a pendulum. I grasped Deborah's shoulders, holding her in place, while I hammered her cunt relentlessly.

"Ooooh," she cooed as she started to cum around my pistoning cock. That excited me more and I slammed into her even harder.

I wanted to hold out longer but my body could not deny my purpose so with a loud grunt I jettisoned thick wads of semen into Deborah's fertile womb.

"Oh my God," I heard Susan gasp after spurted the last drop of my precious seed into her partner. "That was intense!"

"Do you think you can handle your first cock next week, hon?" Deborah asked.

My cock twitched at the realization that Susan was a virgin!

"I hope so!" Susan smiled nervously at me as I pulled out of Deborah. "Oh my God, you're still hard!"

"My husband is very virile, Sue," Sam grinned proudly, patting her baby bump.