Some days you gotta dance
Live it up when you get the chance
'Cause when the world doesn't make no sense
And you're feeling just a little to tense
Gotta loosen up those chains and dance
--Dixie Chicks
Calling Ideas for May 19, 2012

This is:

Frog Jumping Jubilee Day
In 1928, the first jumping frog contest was held in Calaveras County, California. See my original comments here.

You can break out your frog songs: "Joy to the World" ("Jeremiah was a bullfrog") and "Froggy Went a Courtin'". You could even change the words to "froggy went a jumpin'". Dancers probably wouldn't appreciate frog legs as a snack, however.