Jimmy Fallon & Justin Timberlake show you what a Twitter conversation sounds like in real life. Subscribe NOW to Late Night with Jimmy Fallon: http://full.sc/IcjtXJ Watch Late Night With Jimmy Fallon Weeknights 12:35/11:35c Get more Jimmy Fallon: Follow Jimmy: http://Twitter.com/JimmyFallon Like Jimmy: https://Facebook.com/JimmyFallon Get more Late Night with Jimmy Fallon: http://LateNightWithJimmyFallon.com/ Follow Late Night: http://Twitter.com/LateNightJimmy Like Late Night: https://Facebook.com/LateNightWithJimmyFallon Late Night Tumblr: http://LateNightJimmy.tumblr.com/ Full Episodes: http://full.sc/LgPtX0 Get more NBC: NBC YouTube: http://full.sc/MtLxIM Like NBC: http://Facebook.com/NBC Follow NBC: http://Twitter.com/NBC NBC Tumblr: http://nbctv.tumblr.com/ NBC Google+: https://plus.google.com/+NBC/posts "#Hashtag" with Jimmy Fallon & Justin Timberlake http://www.youtube.com/user/latenight