Improv Everywhere performs large scale, public pranks all year-round, not just on April Fools' Day. But given that the holiday is the prankster's Christmas, they always break out something special.
This year, 2000 people descended upon Times Square to do one simple thing: walk backwards. And it's predictably weird. But, as an added dash of April Fools' fun, Charlie Todd and company start showing their hand about halfway through, revealing that they're pranking all of us watching at home as well. By the time you see people biking backwards you know he's played a little joke on you, too.