Zipper Google Doodle Joins ‘Do A Barrel Roll’ And 11 Other Google ‘Easter Eggs,’ Tricks [PHOTOS]

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.

Gravity

Type "Google gravity" in the search bar and click the MrDoob website link. Everything will fall from your screen like gravity.

Tilt

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.

Askew

Type "askew" in the search bar and click I'm feeling lucky or hit the "Enter" key. The screen will appear slightly askew.

Epic

Type "epic google" in the search bar and click I'm feeling lucky or hit the "Enter" key. Font size will appear "epicly" big.

Weenie

Type "weenie google" in the search bar and click I'm feeling lucky or hit the "Enter" key. Font size will appear super small.

Flight Simulator

In Google Earth, click on Tools > Enter Flight Simulator, and you can simulate a flight.

Spam

In the Gmail spam folder, a recipe for Spam.

Hacker

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.

Reader Ninja

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.

Pirate

Search 'Google Pirate' or go here and the Google homepage is written in pirate-speak.

In honor of the 132nd birthday of the inventor of the zipper, Gideon Sundback, Google unveiled its latest “Easter Egg,” 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. Here are some of the secret tricks hidden by Google.

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 "Google gravity" in the search bar and click the MrDoob website link. Everything will fall from your screen like gravity.

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.

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.

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.