Boxing Day
Happy Boxing Day, the important cat holiday.

On the first Boxing Day, Basht created the first box, and offered it to all the living creatures. Only one was smart enough to understand the gift, and promptly sat in it. As a reward for being so clever, Basht made her the ancestor of all the felids. Now every time a cat sees a box, they sit in in an act of remembrance and worship of ancestor whose name all cats know, but they don’t share with lesser beings.