The phrase "the whole thing" refers to something in its entirety or as a complete package. It can be used to describe an event, situation, object or idea that is considered comprehensive and encompassing. For example, if someone says "I saw the whole thing on TV," it means they watched the entire program from beginning to end without missing any part of it. Similarly, if someone refers to a book as "the whole thing" about a particular subject, it implies that the book covers all aspects and details of the topic in question. In summary, the phrase "whole thing" is used to describe something that is complete or entire in its nature.