齿冷

Literally 'teeth cold'. The image: opening your mouth in scornful laughter so long that your teeth grow cold. The classical phrase 令人齿冷 ('makes one's teeth go cold') comes from the History of the Southern Qi (《南齐书》) and is the standard frame today.

Literary and written. Almost always in the fixed pattern 令人齿冷 or 为人所齿冷. You'll see it in essays and editorials, rarely in casual speech.