A flash mob is a mass public gathering, unanticipated by anyone other than the participants, who communicate and organize the gathering beforehand via electronic means such as texts, social networks like Twitter, etc.
So, what if the flash mob took place in Times Square? Sounds interesting, right?
What if the flash mob in Times Square was made up of cute guys stripping down to their underwear to show off a new underwear line? Positively delicious.