Ever found an angry, purple mark on your neck after a particularly enthusiastic makeout session? We've all been there, left to wonder one thing: what is a hickey, anyway? How long do hickeys last? And ...

If you’ve ever worn a turtleneck in 70-degree weather or tried to discreetly sneak a cold compress out of the freezer without your parents noticing, then you’ve probably had a hickey before. For those ...