Your guitar gains the power to tune itself, as well as everything else. It tunes itself, it tunes a piano, it even tunes a fish (buh dum, SHING!), but when you play a note wrong one day, it's magic tuning power tries to tune
you! In the process your vocal chords are mangled and ripped apart so that you can only make guitar sounds with your mouth for the rest of your life. On the bright side, you could make a lot of money because of this! Well, you could if the government ever lets you leave their testing area after thinking you were some type of advanced life form with an advanced language.
I wish work wasn't so boring!