I pushed and this time my finger slid in up to the last knuckle. For the first time in over 20 years my frigid old prude of a mother in law was being...finger fucked by a man. I moved my finger in and out, forcing it as far inside her as I could with each inward thrust. I ran my thumb over her ancient clit. Was it my imagination or was it swelling?I leant forward and did something to her that I was sure her husband had never done - I took her elderly clitoris between my lips and started to suck. Taking his cue he leaned over and kissed her. Soon the robe was gone revealing her wonderful body with C size breasts, a well-rounded ass and long powerful looking legs.What’s not to like.Then she got down on her knees and unzipped his pants. Boy did she get a shock as his cock was a bit longer than mine but way thicker.However it was a bit too late for her to back out of this.She reached out, held his dick and put the head into her mouth so she could suck on it and his dick started getting. In our entire lives we had never foughtbefore. Well, maybe for an hour or so, but nothing like this. In fact, thelast fight I remember us having involved her ripping the head off of my GIJoe. And that had been many years ago."Maybe you should give her a call?" Mom suggested. I almost took heradvice but then decided that if anyone should be calling anyone, it shouldbe Sam calling me. In an attempt to change the subject, I asked Mom whatwas for dinner. "You said you weren't going to be here," she. I moved my hand further and started rubbing up and down feeling her slit. My middle finger automatically discovered her cunt hole. I Felt her moist sex juices and started fingering my Mom. We were still looking into each others eyes. I took my hand from her panties and put the finger I had in my Mom into my mouth tasting her sex. Mom kept the eye contact knowing her son now knew what her cunt was like to taste. I moved my hand down again pulling her panties onto her thighs and inserted two.