"The Rattlin' Bog" the Irish folk song taking over social media.. An internationally distributed folk song, the Roud Folk Song Index it has the number 129, and carries such titles as "The Everlasting Circle," "The Tree on the Hill," "The Green Grass Grew All Around," and "Down in the Lowlands," as well as "The Rattlin' Bog." The adjective rattlin' means "splendid" in the context of this song. It is a cumulative song, similar to "The Twelve Days of Christmas", as it has a list at the end of each