THEATER: Vice Versa
Photo/Julian Oppenheim[Part of the Under the Radar Festival]In "Bull," the second novella of Will Self's 1993 book, "Cock and Bull," a large, homosexual, heavyset young man wakes up to find -- metamorphosis style -- that he has a vagina growing out of the back of his knee. (In the other novella, "Cock," a woman finds that she has grown a penis.) That's a fascinating, daring concept . . . so why has the << ildi …