From the invention of the electric chair to the less offensive post-it note, "Bollocks! Why Didnt I Think of That?" features 101 clever inventions we could no longer imagine life without. Each ingenious invention comes complete with its history and handy trivia - I bet you you didn't know early Romans used porcupine quills as tooth-picks? Or that 1,000,000,000 Barbies have been sold worldwide? This must-have guide will allow you to impress your mates with your newfound fascinating knowledge of every invention from toilet paper to the Theory of Evolution. And it will have you slapping your head in no time, thinking "Bollocks! Why didn't I think of that?"