A body language expert and a former FBI agent says that we've all be interpreting the arms crossed body language incorrectly. Here's what it really means.

Jeremy Barr says he didn't set out to create Local People With Their Arms Crossed -- it was just a fluke. Now it's taken off as the internet's newest Tumblr darling.

These crossed arms, like the umbrellas that earned the movement the nickname the " Umbrella Revolution," seem to be special feature of Hong Kong's protests, but they follow a familiar pattern.