Mistress is bored and decides to have some fun with her slave. She ties his balls tight with string and starts squeezing and teasing his cock. The Mistress starts to suck the slaves cock making him bulge. The slave is enjoying the attention. The Mistress then instructs the slave to fuck her from behind using him as her sex slave. The slave fucks the Mistress hard and the Mistress enjoys it. Once the Mistress has cum she pulls away from the slave denying him an orgasm and leaving him hanging as she walks away satisfied.