shack-wacky
adj.— «People became “shack-wacky.”…They went insane with a frequency which would be significant if one knew what was meant by it.» —“Wisconsin Death Trip” by William H. Gass New York Times June 24, 1973. (source: Double-Tongued Dictionary)
Further reading
Sara in Madison, Wisconsin, was reading an old edition of The Joy of Cooking and came across a recipe that described a cake’s ingredients as earrings for an elephant. She couldn’t discern whether the authors meant that was a good thing...
Sean in Oneonta, New York, says that when he was growing up in New Jersey, his family would pile in the car and set off on a surprise adventure, whether a short distance or long, and the kids would be told only that they were going on Buxtehude...