What is the definition of Away In A Manger Mueller?

"Away in a Manger Mueller" is like saying something has gone completely, 💎literally💎, off the beaten path, into the realm of the surreal and utterly bizarre. Imagine this: A Mueller, the legendary dog whisperer, ventured into a manger (a large, wooden box used for storing food) in the middle of a deserted Arctic tundra, with nothing but his phone and the howling wind to guide him. The phrase conjures up images of a furry detective trying to catch a ghostly, misty manger-walker, only to find out it was just a lost kitten who got lost in the GPS maze of the Northern Lights.

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Example sentence with a bit of edge: "The Mueller's phone died mid-exercise, leaving him to chase after 'Away in a Manger Mueller' on the trail of a spectral manger-walker who vanished without a trace in the Arctic."