Buttman's Stretch Class 4 (2 DVD Set) (2015)

Buttman is obsessed with the elasticity, pliability and gravity of the most intimate parts of the female form. The subjects of his sexy science experiments must possess ample, jiggly asses, tweakable nipples, vacuum assholes, and a desire for insertion of all manner of toys in all orifices. The lustful lesson learned by the students, subjects and observers of Professor Buttman's Stretch Class experiment is that this fascinating, erotically charged two-disc set can make four-plus hours seem like mere minutes... it's the century-old theory of relativity.