Madame Madison found her slave bragging to someone that he did not feel pain whenever his mistress punished him. So she pretended not to have heard that and that day she looked for an excuse to punish him. She slapped him hard while she sat on his stomach. She slapped him repeatedly and face busted him. She made sure to slap the same place repeatedly till he was not only red face, but in a lot of pain.
Mistress Aurora and mistress Sofia like to instill discipline to slaves who do not tow the line. This slave was beginning to misbehave and they had to steer him in the right direction. They called him to the living room and slapped him without warning. He winced and saw stars but they did not stop. They rained the hard slaps on him without caring where they landed. When they were done, he swore never to put himself in a position to be punished like that again.
Lady Cruella was slapped once and she vividly remembers how blinding the slap was. And when she became a mistress, she decided to follow the slap fetish line. She loves to give the kind of slaps she once got - brutal and hard slaps which make their target confused for a couple of seconds. She always slaps a slave or a loser so hard that her own hands become red from the impact.
Madame Madison wanted to see how strong her slave was and to find out his pain threshold. She slapped him to find out. They were hard slaps and very painful as well. She slapped him repeatedly and despite them being blinding slaps and left him with a red face, the slave endured it all and impressed the mistress who rewarded him for being strong and having a very high pain threshold.