canthal tilt

Etymology
Popularized during the 2010s in incel forums. The term gained further popularity in mid-2023 on TikTok after a user created a filter that draws a line showing one's canthal tilt.

Noun

 * 1)  The tilt of a line drawn from the outer corner (the lateral canthus) to the inner corner (the medial canthus) of one's eyes; a lower inner corner is referred to as a positive tilt while a lower outer corner is referred to as a negative tilt.