Marc Wallice is Dr. Butt, a TV pitchman marketing anal sex in this loser, one of those Caballero Home Video "classics" found in the remainder bins as a DVD reissue.
The lousy vignettes concern couples who watch him on tv and then try out backdoor action at home. Director Frank Marino is capable of making a good movie (see: "Sheepless in Montana" from the year before) but is out to lunch this time.