As a father taking his very well-brought-up young daughter to the opera for the first time, Peter Ustinov was unwise enough to choose the Baths of Caracall in Rome. The opera was Aida: during one particular scene the whole stage seemed to be covered with animals — camels, elephants, horses, unwanted cats, and so on. At a climactic point, almost all the animals relieved themselves simultaneously. As he stared aghast at this incredible sight, Ustinov felt a light tapping on his shoulder and heard his daughter's earnest voice: "Daddy, is it all right if I laugh?
—The Little, Brown Book of Anecdotes