Revenge

The three girls that was standing around Marcus giggled maliciously.

Each and one of them had been his conquest for a night and was promised the world by him, then discarded the following morning after he had got what he wanted; their willingness to give their bodies to him. 

He glared at them.

Somehow they had transformed him into a woman. Probably with that leather contraption he had around his neck. He remembered everything going black after something was put around his neck.

There were no chance taking it off either because they had bound him very good, and exposed his female parts to everyone around him.

He could handle being tied up but the vibrators rammed into his pussy and ass was felt both fulfilling and uncomfortable. 

"Aw, he will make such a nice woman", one of the girls fake laughed.

"Don´t worry being a woman Marcie, you will love the orgasms", the second girl said. 

 The third girl didn´t say anything. She just held up a smartphone and adjusted the patterns and intensity on the vibrators before turning them on.

The vibrations coarsed through his body. It didn´t take long time before the discomfort of having two vibrators stuffed up his holes was gone, replaced by pleasure.

The three girls gave each other a knowing smile.

They had optimized the patterns on the vibrators to create the strongest orgasm they could.

The magic collar had an interesting rule to it: Orgasm with it on and you stay a woman even when taking it off. The stronger the orgasm, the more woman you will become in your mind.