Tell the truth: Did you even blink an eye when you noticed David Hasselhoff photobombing your Google+ photos earlier this week? While Google's April Fool's stunt may have made a few people smile, it certainly wasn't a surprise. The online search giant has become known for pulling pranks on the first of April, and it's not alone.

It seemed every company in creation tried to get in on the fun this year, from British amusement parks offering rides for dogs to Virgin's SmartKicks, a take on the recent introduction of smartwatches and smartglasses.

Weird-but-true news also made a triumphant appearance this year, with stories about Willie Nelson's stuffed on-stage armadillo being kidnapped and returned, and a supposed candidate for the Holy Grail having been found in Spain.

Did you hear about the newly developed bio-metric technology that allows users to unlock their phone with the swipe of the beard?

Yes, you heard it right swipe your beard and your phone is unlocked and ready to be used. The folks at iStrategyLabs have come up with this mindblowing, beard swiping app called BeardSwipe.

Wondering how this app works? BeardSwipe utilizes a patented beardpoint recognition (BRT) to capture a man's unique follicle pattern.

According to their website, "Your beard is one of the best password in the world. It's always with you and no two are exactly alike. BeardSwipe lets you unlock your phone simply and effortlessly."

Today is April Fools' Day and in case you are done pulling pranks for the day, here's a quickie of a prank that you can easily pull off on your friends.

The toughest thing about pulling off a prank on your roommate is that you have tried and done everything and every time you think of doing something new your roommate already knows about it. Well, here's an interestingly weird prank that you can easily pull off on your roommate, all you need is a photo of yours and a jar, big enough to fit that photo.

Its 1st April, the notorious day for practical jokes and uninhibited tomfoolery all around the world.

We promise to be honest and not play the Devil's advocate today.

While there are no certain historical records to the beginning of this day's tradition per say, there are many analogies to it.

For one, it is believed that the name of the day has its roots in Geoffrey Chaucer's 'Canterbury Tales' in 1392 while others give it a more religious touch. It is said that Pope Gregory XIII set the foundation of the Julian Calender in 1582 by doing away with the old style Gregorian Calendar. As tradition has it, the old world cultures like Romans celebrated New Year's Day on 1 April instead of January 1.

And thus it became a time-hardened tradition to poke fun and play practical jokes in Europe and soon spreading to the other parts of the world.