This is one of the illustrations I did for book series that name is "Mostatab" in the Persian language. which means "Worthy or Suitable" I guess. 6 books with 6 different subjects. like Hat, Mustache, or Eyeglasses...

This image is related to the "Book of Clock". about how people found the right time with help of Sunlight and shadow. I just thought, I just guessed what happens if someone uses his middle finger!