My Mother-in-law turned 54 years old recently. My wife and her sister planned to take her out to dinner along with myself and one of my MIL's girlfriends. My MIL can be have a filthy mouth and does make a lot of sexual comments and references. She is single and probably just under-sexed and horny which is why after dinner they were planning to take her to a male strip club. Just before her birthday the strip club had a fire and was closed down and it was the only male strip club in town. They figured it was too long a drive to take her out of town this time since it was about a 3 hour drive to the next nearest male strip club. She knew what they were planning and was disappointed but they did promise to go to a club in the future.

It was my sister-in-law that had an idea which she was only suggesting as a joke but my wife thought it was a great idea. She suggested I give my MIL a strip show and a lap dance. I was surprised when my wife was serious and wanted me to do it for real. She said I didn't need to go naked but could just wear a thing or something. My SIL said tells my wife that my MIL would like it better if I did go naked. My wife didn't seem to mind if I did and when I asked her how she would feel with her mother seeing naked she said that she had no issue with it. I told her I didn't know if I wanted to go that far so it was decided i would wear a thong. I then asked my wife what happens if her mother gets a little to zealous and tries to do things that are not appropriate with me. My wife's reply was that it was all in fun and if anything happens not to worry and went as giving me the freedom to go as far as it goes with no repercussions. I reluctantly decided to do it.

We went to birthday dinner with my wife, her sister, her mother and her mother's girlfriend. My MIL knew nothing about what I was going to do. We went back to my MIL's friend's house and that's where it was going to happen. It was a complete surprise to my MIL. Music was put on and I began to dance and strip. There I was in just a thong dancing until I got on her lap grinding against her. She was rubbing her hands all over me but avoiding one area. My wife began shouting at her to garb my cock and she actually did. My SIL told her to take off my thong and my wife shouted the same thing. My MIL didn't need to be told again, so figuring what I thought was going to happen anyways, I didn't fight it and just let them come off. I decided I would just have fun with the whole situation. There I was naked with my MIL now having her eyes more focused on one part of me. I decided to put it right in her face which got quite a unexpected response from her. She began sucking in it. I pulled back a bit to get it out of her mouth and my MIL began to get into it more with me. She slipped off her dress and then took off her bra. She was now in only stockings and panties. I put my hands on her breasts and she didn't mind. She told me to suck them which I did. She them says she wants to give me a lap dance and I am seated now as she is on my lap grinding against me. I was aroused and all could see I was. She then pulled off her panties and into her pussy she slipped me. We were fucking in front of everyone. Once done my MIL told everyone that this was going to be a birthday she would never forget.

My wife pulled me aside asked why I let her fuck me. I told her she gave me free rein to do anything and it was her mother who initiated the fucking. She said she didn't mean fucking. I warned her about things possibly going too far and that was an example. She said it was too late to do anything about it now but at least her mother had a good time.

The days that followed had me see photos and video of my dance which I didn't realize were taken.