fortune cookie 
noun North American
A small biscuit containing a slip of paper with a prediction or motto written on it, served in Chinese restaurants.I have a slip of paper from a Chinese fortune cookie taped to my computer monitor....
- The slip of paper inside the fortune cookie I got to choose on Thursday night read: ‘You will soon find the pot of gold at the end of the rainbow.’
- The president is a riddle wrapped in an enigma inside a Chinese fortune cookie.