1893, Hubert Anthony Shands, Some Peculiarities of Speech in Mississippi, page 71:
“In Mississippi dare and double dog dare are used by children in quarreling. Dog dare and double black dog dare I never have heard.
I remembered the scene from “A Christmas Story”, where the kids were daring one of their pack (”Flick”) to stick his tongue to a freezing cold light pole in winter.
They skipped over “Double Dog Dare” and went straight for the mother of all dares - the “Triple Dog Dare”...
Here it is:
https://www.youtube.com/watch?v=qeJXYhdfR6Q
Best movie ever...