In honor of the 132nd birthday of the inventor of the zipper, Gideon Sundback, Google unveiled its latest Easter Egg for Tuesday's Google Doodle, a full page zipper than unzips to reveal search results on the search page for Sundback, joining other Easter eggs like do a barrel roll.
By simply logging on to Google's homepage, users can unzip a zipper with their cursor and watch as the full screen unzips to search results for Sundback. For the many amused by the latest trick, this is not the first time Google has left tricks known as Easter eggs for Google users.
Back in November, Google unveiled do a barrel roll, which spins your screen and turns it temporarily upside down in one of the many easter eggs planted by engineers. The neat trick went viral after users created memes and posted on Twitter about the egg. Similarly, Google launched a special Google Doodle in honor of Thanksgiving 2011, where users could customize a turkey with colors, feathers and accessories, and let it snow for Winter 2011, where snow falls on the screen.
According to Google, these easter eggs are inside jokes done by engineers working at Google headquarters to amuse users.
A Google spokesperson confirmed to Mashable that do a barrel roll' was created by a Google engineer with the primary goal of entertaining users -- while showcasing the power of CSS3, the newest version of the skin.
Haven't seen any of Google's Easter eggs? Here are some of the secret tricks hidden by Google, including the zipper and the popular do a barrel roll.
Do a barrel roll
Type do a barrel roll in the search bar and click I'm feeling lucky or hit the Enter key. Watch your screen flip around completely.
Type tilt in the search bar and click I'm feeling lucky or hit the Enter key. Watch your screen tilt slightly to the right.
Type askew in the search bar and click I'm feeling lucky or hit the Enter key. The screen will appear slightly askew.
Type epic google in the search bar and click I'm feeling lucky or hit the Enter key. Font size will appear epicly big.
Type weenie google in the search bar and click I'm feeling lucky or hit the Enter key. Font size will appear super small.
In Google Earth, click on Tools > Enter Flight Simulator, and you can simulate a flight.
In the Gmail spam folder, a recipe for Spam.
Type google hacker in the search bar and click I'm feeling lucky or hit the Enter key to see how Google would look if it were hacked.
In Google Reader type on your keyboard: 'up, up, down, down, left, right, left, right, B, A' and a ninja will appear on the left side of the screen.
Search 'Google Pirate' or go here and the Google homepage is written in pirate-speak.