A disability applicant was being interviewed and uttered this nice congruent conflation of “through the roof” and “off the charts”, both meaning much more than usual. This malaphor is the cousin to a previous posting, “the humidity was off the roof”. https://malaphors.com/2014/11/03/the-humidity-was-off-the-roof/ A tip of the hat to Sam Edelmann who heard this one and passed it on.
Sales of THE malaphor book, “He Smokes Like a Fish and other Malaphors”, are off the roof. Get yours today on Amazon for a piddly 6.99, the price of a crummy mug.