Humping An Inflated Automobile Tube

I was an engineering student some fifty years ago when I was 22 years old. I was pretty good at inventing and constructing both useful and not-so-useful gadgets in my spare time.

I had a small workshop next to the garage and worked on my projects in my spare time. It was here that I rigged up an artificial vagina with a lightly inflated automobile tube folded twice over and fastened with a soft string to hold the tube in place.

If folded and tied up properly and inflated sufficiently the tube would resemble a nice soft pussy. All one needs to do is smear the center with some soft jelly and push your cock in and hump away.