CBT Ball Stretching Swollen Testicles Featuring Mistress Serena. Mistress Serena likes to challenge her slaves and this one has been doing his best to please her in the ball stretching area. He’s taken some hefty weights before in an effort to please, but just how far will he go now. Mistress Serena notches up the stakes in this session and an almighty amount of weight is strung from his already stretched and swollen testicles… When she starts to put her weight on the ball parachute, via her exquisite thigh length boots, in addition to the dangling weights, the agony and the ecstasy is almost too much for the long suffering slave to bear.