ITABAG  (痛バッグ) came from Japanese which is Ita (痛) refer to pain made to the bag and the owner's wallet and Bag (バッグ). This term popularized by Japanese otaku which bring their overload collection on their bag. The term ITABAG actually refer to the collection itself, but now the term ITABAG not only used to call the collection but also the base-bag used to cover the collection.