In the Netflix series, “Evil Genius”, courtroom artist Kevin John uttered this malaphor when the defendant in the infamous Pizza Bomber case walked into the courtroom. It is a congruent conflation of “a chill (or shiver) ran down my spine” and “my blood ran cold”, both describing a sensation of fear or dread. “Ran” is in both expressions, probably contributing to the mental hiccup. Also “cold” and “chill” are similar meaning and sounding words. A tip of the toque to Mike Kovacs, aka “The Malaphor Hunter”.