First, Ben and Celestia discuss the needle-spiking panic fallout, missing kids in Virginia, screw worms, radioactive shrimp and seeing double in Las Vegas. Then our main segment is secret signs and signals! Real or legendary, these signs and markers are throughout human history to tell "those in the know" what to expect (food, sex, danger). From secret codes sewn into quilts to help the Underground Railroad effort to rock cairns and inukshuks, there are many tales of people making an effort to show others a safe path. We also look at the ancient bro code known as Masonic symbols, which manly men have been putting on their erections for generations. And of course we must touch on the world of swinger symbols, where anything from pineapples to a toe ring might be sending signals -- or just giving people a laugh.