The 1.25 inch Big Bang Theory Hearts Your Brain Button is basically how Dr. Sheldon Cooper writes love letters. You see, he's a cheeky lil' bugger so if he's going to be whispering sweet nothings into somebody's ear, it has to be anatomically correct! I wonder if Sheldon has figured out the mathematical equation for love yet? Either way, the Big Bang Theory Hearts Your Brain Button is a great button for you fans of the Big Bang Theory!