My wife came home. She was out with a bunch of women. At a certain point she met a woman, Helen, who came from the same hometown as me. My wife asked if she knew me.

Helen reacted in a strange way.

Turned out she was an ex-girlfriend of mine. 

I remember Helen very well. She was a few years younger then me, and she adored me. I must say I took advantage of that adoration. I forced her to do things she wasn't comfortable with.  I shaved her pussy and fucked her in her ass, while I was wearing her clothes. I took her virginity in every hole.

She told my wife I was a sick pervert, and that she hoped someone would teach me a lesson.

At that point my wife told her I was her husband.

Helen said she was sorry she said ugly things about me, but my wife told her not to worry. And with a smile she told Helen that I wasn't able to do those humiliating things anymore.

Helen looked a bit puzzled.

My wife told her she turned me into a woman.  In fact her personal maid. And that I was wearing a chastity belt 24/7. 

Helen didn't believe her at first, but my wife showed her a few pictures of me.  Helen was speachless at first. But then she said she hoped I would be in that belt for ever.

My wife said that she would keep me locked for ever. 

And she promised Helen she would spank my ass merciless later that evening and that she would make me shout Helen's name with every swap of the paddle. 

Nice surpise, isn't it? said my wife.

Now, bend over and drop those panties.