sack dance
n.— «One day I came home to see, amid the rotted boards the contractor removed and was replacing, the bent carcasses of the gutters. After I was confident that no one could see me, I did an atavistic little sack dance around them.» —“A backlog of careful musings” by Jeff Millar Houston Chronicle (Texas) Oct. 25, 1990. (source: Double-Tongued Dictionary)