This document contains instructions for a mathematical exercise that is purported to surprisingly reveal personal information about the reader. It instructs the reader to: 1) Choose how many times per week they would like to go out for dinner; 2) Multiply that number by 2 and add 5; 3) Multiply the result by 50 and add either 1758 or 1757 depending on if their birthday has passed; 4) Subtract the year they were born. The first digit of the final three digit number reveals the dinner frequency and the last two digits reveal the person's age.