This song is about two lovers trying to let go of their love as they live thousands of miles apart.
The second verse tells the true story of the astronaut Lisa Nowak, who had a crush on her fellow astronaut William Oefelein. In 2007 she drove for 14 hours from Houston to Florida, before kidnapping Colleen Shipman, the girlfriend of Oefelein, whom she saw as her love rival. It was claimed that Nowak wore a diaper during her journey as so determined was she to remove Shipman from the equation that nothing, not even potty breaks, was going to stop her.
The Flaming Lips' "Do You Realize??" was named in March 2009 the official Rock Song of Oklahoma. Four years later, Oklahoma's governor Mary Fallin pulled the tune as the state's official rock song in a move her office said had more to do with priorities than musical taste.
The lyrics for "Mary, Did You Know?" were written by Christian singer and comedian Mark Lowry, after his pastor asked him to write a Christmas musical for their church. Southern gospel musician Buddy Greene later added music to his words.