As billions of cicadas begin to emerge after 17 years in hibernation, it has us questioning (and itching and ear-plugging): What used to be the very last thing the little critters noticed once they visited the mid-Atlantic?We’ve come up with a few potentialities positive to transport you proper back to 1996.Jennifer Aniston’s layered hair circa “Pals” at its very best:Bill Clinton getting elected to administrative center (despite a tad b…