Similarly, if you drop your phone in the hotel loo and tell the reception staff "It's rooted," they might start looking for vegetation sprouting from the seams. (The Age)
Vegetation sprouts from the seams? How on earth it comes out of “a folded back and stitched piece of fabric.” Is it an idiom denoting a kind of pun: ‘vegetation can sprout from the seeds, but how goodness from the seams’? So this expression might be saying they are in a state of confusing? What does it mean?