The ultimate 'puppy-dog eyes' — huge glossy eyes and a quivering lip signal pleading, begging, or exaggerated cuteness deployed to get sympathy or a favor. Added in Unicode 11.0 (2018), it exploded in popularity almost immediately, becoming one of the most recognizable 'asking nicely' emoji in the entire set.
Keywords: begging, big, eyes, face, mercy, not, pleading, please, pretty, puppy, sad, why