We should fuck.

"We should fuck", I said.

"I'm not going to disagree," replied Kirsty, moving one hand to slide along the shaft of my rigid cock. "This dick of yours has been inside our daughter's pussy and filled it with cum. Twice. With our son fucking her up her tight, farty arse, while her giant tits wobbled all over your chest." We kissed again, her dirty talk turning me on all the more. She was getting good at it now. "Our own daughter, Billy, and now your semen is deep inside her perfect little virgin cunt."

Kirsty crouched down and licked the head of my cock, pre-cum already flowing freely from it.

"Now it's my turn," she continued, taking my cock inside her mouth and sucking it towards the back of her throat before releasing me to continue her monologue. "My pussy is so wet, I want this cock of yours inside it." She moved over to the sofa and lay down spreadeagled on it. "Come here, Billy, take me. Fuck your slutty wife just like you did our horny little daughter."

I mounted Kirsty and lined my eager dick up with her sopping wet vagina and started to ease myself in, lowering my chest onto her giant boobs, and I began thrusting with abandon. The dirty monologue didn't let up.

"Yes, fuck me you dirty big boy! Fu-u-UUUCK! YES!"

I paused to fart, her hands on my arse.

"Oh you dirty, dirty boy! You sexy, dirty, daughter-fucking, fart-loving pervert! Yes! YES! OH, YES!" Her words descended into incoherence as our intercourse reached a crescendo and a moment later I came hard inside my delighted wife.

"Oh! Oh yes, that's good," she said as we both calmed down. We lay there for a moment, catching our breath, before I finally withdrew my cock from her pussy and helped her up.

"Right, we'd better read those letters, then," she said, matter-of-fact-ly.