Butter Me Up! (1984) - Charles Webb

Year: 1984
Country: USA
Starring: Lili Marlene, Dann T. Mann, Lynx Canon, Jon Martin, Nina Hartley, Blair Harris, Scarlett Jones, Rock Maraino

Description on DVD cover:
Through a series of flashbacks, a beautiful wife recalls her introduction to anal sex. Adventures include scenes with her young and wild girlfriends and a series of group encounters that are sure to please the most lusty viewer!

Seven Seductions (1981) - Charles Webb

IMDB blurb

Christopher Hamilton is a wealthy and arrogant British playboy seeking the ultimate sexual experience. His quest eventually leads him to the mysterious sanctuary of Madame Lau, an exotic oriental temptress endowed with mystical powers. She promises Christopher that he will find the gratification he seeks - but that the key to this treasured reward lies only within himself. Transforming herself into a host of beautiful women, Madame Lau caters to Christopher's every whim, and soon he is ushered into an erotic world where his fantasies come to life in graphic detail.