"any premises, person or organization that is presented, advertised, held out or styled as, or which provides notification to the public that it is a swinger's club; an adult encounter group or center; a sexual encounter group or center; party house or home; wife, spouse or partner-swapping club; or that it provides permission, an opportunity or an invitation to engage in or to view sexual activity, stimulation or gratification, whether for consideration or not."Despite the Supreme Court's openness to consideration of secondary effects, this seems like a clear First Amendment violation.
(via)