When you have absoloutley nothing to do and press EVERY key on the fucking MaC keyboard.
Oh, well I have nothing to do let's type 1234567890-=qwertyuiop\asdfghjkl;'zxcvbnm,./!@#$%^&*()_+QWERTYUIOP{}|ASDFGHJKL:"ZXCVBNM<>?.