There is an unending list of questions that irks the human mind at all times during an average, regular day. Answers to these curiosities, however, are not present in disciplinary texts that scholars swear by. A unique forum has been provided for entertaining such curious minds by ex-NASA member, Randall Munroe in his popular website 'XKCD'. Simple yet intriguing things that make you wonder- What happens when struck by thunder in a swimming pool, the consequence of a bullet being hit by lightning, an Earth without the moon. A compilation of such unheard of questions is found in the book 'What If?'. Munroe responds to such inquiries by providing a cocktail of mathematics, physical sciences and humor. Not only do the readers find answers to the strange yet nagging questions in this book, but also enjoy a punch of good wit and sarcasm. Illustrated intelligently by a series of the author's stick figure comic strips, 'What If?' is a read, replete with brains and entertainment.