A type of false dilemma in which contradictory observations lead to the same conclusion. Its name dates back to the rationalizing of a benevolence by the 15th century English prelate John Morton.
EG, those accused of witch craft in the late medieval/early modern period of the 17th and 18th Centuries. They were placed in a dunking chair over a river and lowered underwater.
If they drowned, they were deemed innocent.
If they floated, they were deemed a witch and then drowned.
A slice of life with a little bit of wry humor added.