Reader's Digest » It’s Official: 4 Jokes Research Proved to Be Funny http://www.rd.com Sat, 18 May 2013 13:01:44 +0000 http://backend.userland.com/rss092 en-US It’s Official: 4 Jokes Research Proved to Be Funny http://www.rd.com/slideshows/its-official-4-jokes-research-proved-to-be-funny/