To the rescue: Safe2Pee.org, a clever mashup of maps, reviews, and even text-message-based solutions, brought together for the convenience of discriminating shitter. It's ostensibly designed for individuals of variant genders, since social awkwardness can arise when trips to the Midlands become necessary. But this website's a handy tool for anyone, regardless of whether or not they posses unusual pudenda -- simply specify a location in any US or Canadian city, and poof! You're awash in options.