Best Place to "Accidentally" Grope Someone

A well-known author whose name we cannot recall at the moment wrote something in one of those college anthologies--can't remember which--about the anonymity of a crowd. Or perhaps it was loneliness. Anyway, it was quite appropriate to the topic and would have conveyed the message in words far more powerful than those without which the entire meaning of this paragraph would be lost. There was also something in the book regarding form and function, another point of great significance in this context. To grope someone in an apparently inadvertent manner requires close quarters and the cloak of innocence. The uncomfortably tight maze of Central Market's aisles provides both, thanks to a combination of poor design and incredible popularity. It's impossible on a weekend to maneuver through Central Market without pressing flesh with dozens of strangers. Shoppers collide with great regularity, and foot traffic often crashes to a halt. A simple swing of the hips or twitch of the arm--tempered by a quick apology--provides hours of illicit adult fun.