"Sure."

"Sure, honey," Bill answered rather indifferently. After years of swinging then a couple years of having repetitive sex to try to get his wife pregnant, I'm sure he was anxious to get it on with my wife for some sexual variety.

I looked at Sam. "It would be an honor to be part of your baby's conception," she replied, hugging her best friend again.

"Ready?" Emma asked excitedly as she removed her trench coat to reveal that she wore nothing underneath! Having had been with each other dozens of times, there was no awkwardness when the four of us stripped in front of each other.

"How should we do this?" Sam wondered.

"Maybe we should start simple and have you girls lie on the side of the bed?" Bill suggested. The girls nodded and laid down -- luckily at four months pregnant Sam could still lie on her back -- raised their long legs in the air.

Bill and I exchanged nods and stood in front each other's wife, grabbing hold of their ankles. All four of us were excited and nervous doing something that we had done dozens of times before we settled down and tried to become parents. The girls held each other's hands and smiled at each other before looking up at Bill and I to tell us, "We love you."

And that was our cue. The girls let out low moans as thick cocks pushed their way into their tight pussies. Balls slapped ass cheeks as Bill and I sped up our thrusts. I hooked Emma's legs over my shoulders so I could lean forward to penetrate her cunt at a better angle. Bill on the other hand decided to hold Sam's thighs wide apart, probably to allow him visualizing his cock inside my wife's growing belly.

After several minutes of pummelling, the girls stiffened and cried out, begging us to fill them with our spunk. With Sam already pregnant and Emma desiring to be knocked up, there was no greater incentive for Bill and I to satisfy our wives' wishes. The two of us roared as we released torrents of semen into the girls' cunts.