Madam Mysteria wanted to humiliate this guy and she chose to do it in a way the guy would not forget. She chose to arm wrestle him. The guy agreed thinking it would be a walk in the park for him. But it was not and he was humiliated as well as degraded by what happened. She defeated him and she laughed at him as well as made him do some humiliating things like kiss and lick her biceps.