Subscribe | UPI Odd Newsletter Subscribe HAVERHILL, England, Nov. 13 (UPI) -- A spokesman for the Sainsbury's grocery chain has apologized after children visiting a Haverhill, England, store were given sexually explicit books. The spokesman said the book, entitled "How to Change the World for a Fiver," was mistakenly given to fourth graders visiting the store from Burton End primary school, The Daily Mail reported Thursday. Advertisement The book included the suggestion that readers save water by "bathing with a friend" and contained 12 sexually explicit illustrations. "This was a well-intentioned mistake," the spokesman said. "It is a very nice book about how to make the world a better place but it is not targeted at children. The books were given to store staff by head office because they mentioned the company's positive environmental activities. "A few spare copies were left over in the store which were given as presents to the visiting children," he said. "The cover looks like a kid's book. This was a mix-up and we would like to apologize for any distress caused. It certainly won't happen again."