I think this is funny. So you give a speech at a conference, and afterwards a couple comes up to you and hands you a business card, saying (essentially) "care to join us?" For details and the card see here. Question: when should moronic behavior be treated as private vice, to be discouraged informally; and when should moronic behavior be proscribed by the quasi-legal standards of a community (official conference policy, in this case); and when should moronic behavior be flat out illegal? Hmm. This would be a fun case for someone who teaches sexual ethics (alas, I don't).