Well, I've experienced the 13-year cicadas that I've heard so much about. In Middle Georgia yesterday as soon as I opened the car door I was greeted by an almost deafening, hard to describe sound coming from the trees. It sounded like the summer cicadas I've always known, but louder and sharper.
They also filled the air. You could look up and see them constantly criss crossing the sky. Two or three flew into my face and hair.
It seemed like they'd taken up residence in every tree and bush in sight, but the rumors of the bugs eating every bit of vegetation in sight turned out to be unfounded.