I always enjoyed all that inside jokes, that sometimes only a handful can understand and laugh, while the rest of the people around are looking at you with that tolerant compassion. So I gathered all the jokes that I heard in one place, here. If you know a good one, that it is not in this book, you can always send it to me (my contact details are at the end of the book) and I will add it to the next edition. Have a laugh now, or at least a smile, you can even use this book to test yourself how much you know about one or many fields of science.