Schläfriges Gesicht

A yellow face with closed eyes, mouth slightly open, and a blue snot bubble coming from its nose. Snot bubbles indicate a character is tired or sleeping in anime or manga. Not to be confused with 😴 Sleeping Face 

While sometimes used to convey sadness, dissastification, or illness, Sleepy Face is also not to be confused with 😢 Crying Face, 😥 Sad but Relieved Face, or other emojis with tear or sweat droplets. Samsung’s design previously featured two, cartoon-styled, sleeping-symbol Zz’s overhead.

A previous Microsoft design appeared similar to 😌 Relieved Face.