The Reynoldz

What the heck you say?? Wikipedia once again to the rescue! (I cut and paste a bit for your reading pleasure!)

Rabbit rabbit
“Rabbit rabbit” is a common superstition, held particularly among children. The most common modern version states that a person should say “rabbit, rabbit” upon waking on the first day of each new month, and on doing so will receive good luck for the remainder of that month.

Origins and history
The exact origin of the superstition is unknown, though it has appeared in print at least as early as 1920 in England, where it is most commonly said to have originated, though some reports place its origins even earlier, into the 1800s. Today it has spread to most of the English-speaking countries of the world, although like all folklore, determining its exact area of distribution is difficult. The superstition is related to the broader belief in the rabbit or hare being a “lucky” animal, as exhibited in the practice of carrying a rabbit's foot for luck.

Variations
As with most folklore, which is traditionally spread by word of mouth, there are numerous variant versions of the “rabbit, rabbit” superstition, in some cases specific to a certain time period or region. There are hundreds of variants, some of the most common of which include:

- The Minneapolis Willenbring variation (passed on by the Walker family our neighbors.)

In the late 70's my family learned about this folklore "superstition" from our neighbor, Dave Walker in the form of a game.
For many years, on the first of the month Dave Walker and his family played "Rabbits Rabbits" with their family and friends. So by the time we learned about the Rabbit Rabbit folklore superstition it had already evolved into a competitive game to be played with friends and family and passed along!

Here is our word of mouth variation:

The first one to say "RABBITS" (we shortened it to just one rabbit) or to show a rabbit to another person on the first of the month is the lucky winner!

RABBITS! - I WIN!

for more information and variations of the RABBIT RABBIT folklore - once again see http://en.wikipedia.org/wiki/Rabbit_rabbit