Mistress BlackDiamoond knows how to use small penis humiliation to her advantage and when she noticed that her friends were interested in learning about it, she knew she had to teach them. So she came with a dildo and she showed them how to do it. And she had other items such as chastity devices and the best of them all was the loser who was to be the guinea pig for them.
This guy was so full of himself that these mistresses thought that he had it all. So they teased him so as to deny him and make him at least experience something he was not used to experiencing. But as they did and as he was turned on, they realized that he had a small dick and they knew that they had him by the balls. He was teased and humiliated and the mistresses got him to do whatever they wanted.