Large Black Inflatable Rubber Dildo

My wife and I always enjoyed masturbating together as part of what was once (before she lost interest altogether) a very active and adventurous sex life. In particular I used to love watching her fuck herself with various dildos and other suitably shaped objects.
On the night in question she returned home (more than a bit tipsy) from an Anne Summers party with a large black rubber inflatable dildo. It was supposed to be a vibrator but in practice, when inflated, the little vibrating unit was so insulated that it did little more than make a muffled noise. Her intention was to use this on me! However I insisted that she be the first and she didn't seem to be too disappointed by the idea.
We gave it an experimental inflation with it's rubber bulb like a pre-digital blood pressure cuff. It started at about 6 or 7" long and as it was inflated the length increased to perhaps 8" but it was the girth that increased dramatically until it was about the size of a slender wine bottle.
After we deflated it and applied some lubrication she began to work it up inside herself and I gradually inflated it again as she thrust it back and forth, giving the bulb a little squeeze every 10 or 15 seconds. As it started to grow I could see her pleasure increase and she ploughed herself deeper and harder. As it's girth increased further it became a tighter fit and she had to slow down. After 5 minutes or so it was jammed tight and couldn't be moved much but her fingers continued to work overtime on her clitoris.
This was supposed to be foreplay so I deflated the beast (just a little :-)) and pulled it out slowly at first then quickly so that it broke free with what I can only describe as a sploshy plop!
These days such images are ten-a-penny on the internet but 30 years ago I had never seen anything like the sight of my wife's glorious gaping dripping cunt as it slowly contracted. We tried to fuck then but it was hopeless - she couldn't feel very much and although I was very aroused it wasn't much of a physical sensation for me either.
I pushed the dildo back inside her and inflated and wanked as she thrust and rubbed. There was no way I could last and as I felt my cum rising I begged her to pull it out. She did so, and held herself open with both hands as I shot jet after hot jet into her cavernous cunt.
I really miss those days.
She used it on me later but that's another story.