Flooey

Everything I've tried since pa died has gone flooey.

Well, sir, about a second after Jake nodded his head, the place went flooey. Everybody started whoopin' and placin' bets and yelling out drink orders […]

"Of course. No matter how many times we run the math, there's still a chance this could all go flooey." "‘Flooey’?" "Flooey," agreed Mr. Bones. "There might be something we haven't thought of, some X-factor that makes it all go wrong."