There was a blue moon last night. Did you make a wish?
Condensed from Wikipedia--
A blue moon is the second full moon in a calendar month,
Full Moons bring up claims about the crime rate going up, more babies being born, average people turning into werewolves. Every twenty-eight days a full moon rises to illuminate the skies this equals twelve moons a year, but what happens when there is a thirteenth moon, the Blue Moon?
The blue moon is not only a metaphor for something that occurs rarely, but it also has a history of portending luck, though without a clear line between that of good and bad varieties.
Superstition says that the occurrence of a blue moon is the perfect time to plan long-term goals that will blossom in the future. This idea has to do with the superstition attached to the blue moon that it contains magical properties.
Any goals planned beneath the glow of the second full moon of the month are thought to have the benefit of a kind of psychic tidal pull of the satellite.
Unfortunately, the magic of the blue moon is unpredictably intense.
If you don't use very careful and precise language, the result may very well be more than you bargained for!