>> i thought it had to be fake because if it was real it would have been shot cloverfield style with people running away. i can't imagine all of these people actually agreeing to take off their underwear. people barely like to put their hands on a subway pole let alone a naked butt cheek on a subway seat. >> we're ready to bare it all. thankfully the no underpants ride is totally phony. the bottomless community is the brainchild of the jokesters at improv everywhere. >> improv everywhere is a new york city-based prank collective. we cause scenes of chaos and joy in public spaces. >> those scenes include 200 pap participants freezing in place at grand central station, as well as a scheme where members stage an impromptu lunch time musical ♪ we all have lunch, we're going to use our sports now ♪ >> improv everywhere members are no strange force viral videos. their youtube page has more than 1.6 million subscribers and hundreds of millions of views.