Madame Marissa wanted to test her slave's pain threshold. She went and wore her high heels and she used them to trample this slave's body. She let the heels sink deep into his body and she enjoyed how he cried and begged for mercy. However, in as much as he moaned in pain, he still endured it all and took it like a man. She was impressed with him and learned he had a high pain threshold, which was an admirable thing.