Wade in the water

Reference to an American slave spiritual that is now often sung as a [http://en.wikipedia.org/wiki/Gospel_Song gospel song]. In its original, form purportedly first popularized by [http://en.wikipedia.org/wiki/Harriet_Tubman Harriet Tubman], it was meant to serve as a warning/reminder to those on the [http://en.wikipedia.org/wiki/Underground_Railroad Underground Railroad] that when escaping it is best to walk through the streams and rivers to throw pursuing [http://en.wikipedia.org/wiki/Bloodhound dogs] off the scent.