Starring: Penny Pax, Richie Calhoun, Ryan. DrTuber is the best place for posting images of humans at or above the age of 18 wearing collars, leashes, chokers, neck stretchers, or other restraining. DrTuber is the best place for posting images of humans at or above the age of 18 wearing collars, leashes, chokers, neck stretchers, or other restraining. BTS - The Submission of Emma Marx - Exposed. BTS - The Submission Of Emma Marx, The: Exposed streaming video at Sex Unfiltered.