CollegeHumor: Knock knock http://www.collegehumor.com/tag/knock-knock Funny Videos, Funny Pictures, Funny Links! /video/6403038 http://www.collegehumor.com/video/6403038/kid-knock-knocked-out-by-playhouse-door Kid Knock Knocked Out by Playhouse Door Mon, 24 Jan 2011 15:57:48 -0500 /article/5624776 http://www.collegehumor.com/article/5624776/the-funniest-joke The Funniest Joke Thu, 17 Sep 2009 09:47:19 -0400



/video/729750 http://www.collegehumor.com/video/729750/knock-knock Knock Knock Wed, 07 Mar 2007 14:33:55 -0500