Azfamily.com went on a search for the most widely spread urban legends. Here's what we came up with:

Urban Legend: Chanting "Bloody Mary!" 13 times in front of a candlelit mirror in an otherwise dark room will summon her vengeful spirit.

Urban Legend: A family vacationing in a foreign country returns to their hotel after a day of sightseeing. They notice that their hotel room has been broken into and most of their personal items stolen. For some reason, the thieves left a few items: their toothbrushes and their camera. Once the family returned home, they had the film left in the camera developed only to discover that the thieves did appalling things with the toothbrushes while taking pictures of each other.

Urban Legend: If you listen to certain Judas Priest, Elvis or Ozzy Osbourne cuts on an LP played backward, satanic messages can be heard. And The Beatles' "Lucy in the Sky with Diamonds" can be made to mean LSD if you use the title as an acronym.

Urban Legend: Suspicious cars that drive around and pull up at red lights with their headlights off, then flash the headlights on and off means they are about to shoot someone in the area.

Urban Legend: The spirits of a bus full of school children that became stranded on a train track and instantly killed by an oncoming train are said to push stranded vehicles out of the way of oncoming trains. And even spookier, if you sprinkle baby powder on the bumper, you will discover small handprints after you have been pushed to safety.

Urban Legend: Nostradamus predicted the attacks of Sept. 11 in the following verses:

Volcanic fire from the center of the earth

will cause trembling around the new city:

Two great rocks will make war for a long time.

Then Arethusa will redden a new river.

Urban Legend: This is one of the more known legends. It's about the businessman who awoke to sharp pain in his abdomen and then discovered a large scar. He had apparently been drugged by a provocative woman and had his kidneys removed to sell on the black market.

But perhaps two of the most famous:

The Loch Ness Monster: Also known as Nessie, this creature is said to inhabit Scotland's Loch Ness, a freshwater lake in Great Britain.

The legend is said to have started in 1933 when a Scottish pub owner saw an "enormous animal" in the Loch. Soon, another man claimed he saw Nessie a number of times, describing the creature as 30 feet long with a serpentine look about it with a long neck, small head, and a huge hump behind.

The fact that the belief in the legend persists around the world even today may be propelled by the many Loch Ness visitors who experience Nessie sightings and by the many scientists and other experts over the years who continue to find evidence that, they say, supports the creature's existence.

However, many of these occurrences were later exposed as hoaxes.

Bigfoot: Also known as Sasquatch, Bigfoot is said to inhabit remote forests mainly in the northwest region of the United States and the Canadian province of British Columbia.

Since the mid-19th century, Bigfoot is usually described as a large, hairy ape-like creature. Like the Lock Ness Monster, the legend of Bigfoot survives today because of continuous sightings and findings of evidence supporting his existence.

The most well-known evidence includes large footprints of questionable origin, and pictures that many say could easily be apes or humans in ape suits.