From the best-selling author of 'XY - A Toolkit for Life', comes the ultimate guide to dealing with life as a teenage boy. A miscellany of information on everything from sex and drugs to the best way to chat someone up in Japanese. 'XY - Top 100 Tactics' is a list of everything a teenage boy needs to know, plus a load of amazing trivia he never thought to ask. 'XY: 100 takes you beyond the facts, and serves up a century of practical strategies, hints, tips, trivia and tactics to help you stay safe, sussed and smiling.'