When the stock market crashes on the Thursday before Easter, you-an ambitious, although ineffectual and not entirely ethical young broker-are convinced that you're facing the Weekend from Hell. Before the market reopens on Monday, you're going to have to scramble and scheme to cover your butt, but there's no way you can anticipate the baffling disappearance of a 300-pound psychic, the fall from grace of a born-again monkey, or the intrusion in your life of a tattooed stranger intent on blowing your mind and most of your fuses. Over these fateful three days, you will be forced to confront everything from mysterious African rituals to legendary amphibians, from tarot-card bombshells to street violence, from your own sexuality to outer space. This is, after all, a Tom Robbins novel-and the author has never been in finer form.