A wonderful collection of gross “facts”, including the furthest distance someone has sprayed diarrhoea and the longest time taken to get an erection. You may have noted that “facts” are in quotation marks; many of them require a grain or two of salt but if they aren’t real, honestly how did the authors come up with some of the categories? Any reader with a sense of humour leaning towards puerile innuendo will enjoy this. ( )