The German word "backpfeifengesicht" means "a face that needs to be slapped." The most common birth day is Tuesday, while Saturday is the least common. Around 39% of humans have an extra small bone behind their knee called a fabella. The Guiness World Record for smallest dog is held by a 3.8 inch tall Chihuahua named Milly. When animals sleep through a cold period it's called hibernation, but when animals sleep through a hot period it's called estivation. The only full-length book that Eminem has ever read is LL Cool J's autobiography.