Sergio

What the picture shows

A wide, stretched face with brown eyes, heavy stubble, and black over-ear headphones, its mouth flattened into a thin horizontal line with a red shirt visible at the bottom. Chatters likely use it to express deadpan silence, awkwardness, or unimpressed resignation.

No measured meaning yet. Used 52 times in 3 channels this month; one is written once chat gives enough evidence.