It's the sort of obvious joke that makes you slap your head and say, I wish I'd thought of that. Parody website areyoufacebook.com went live Tuesday, poking fun at Facebook's first-ever commercial, which compares the social network to chairs, bridges and other inanimate objects that connect humans. Facebook released its much-mocked ad "The Things That Connect Us," on the the same day that CEO Mark Zuckerberg announced the site had surpassed 1 billion active users.How areyoufacebook.com works: After the website loads with the familiar "Chairs Are Like Facebook" shot from the ad, you can type any word or phrase you want to replace "chairs" and the site magically puts a relevant image behind it.Read More... More on Facebook