Consider the bathroom stall, that utilitarian public enclosure of cold steel and drab hue. It can be a world of untold secrets, codes and signals as invitations to partake. Like foot-tapping: Who knew? Let us peer in, shall we? Let us peer into the stall as intently as Sen. Larry Craig (R-Idaho) allegedly did in a bathroom at the Minneapolis-St. Paul International Airport in June, when his searching blue eyes were visible to an undercover cop, who would later title his police report on Craig's arrest "Lewd Conduct" and write that police had made "numerous arrests regarding sexual activity in...