For good or ill, a man can be prickly when pressed on the subject of his, ahem, endowment. Spare a thought, then, for Juan Pablo Di Pace, who has seen his manhood manhandled by the marketing department of the Royal Opera House. Cast in the crowd scenes for a 2001 production of Verdi's Rigoletto, Di Pace was surprised to discover some years later that his naked torso was used on posters advertising shows he......