Licking-lips delight, almost always about food — anticipating a delicious meal or savoring one already eaten. Its playful, slightly cartoonish tongue makes it read as more mischievous and appetite-driven than a simple smiley, and it's a staple of food-blogging and restaurant-review captions worldwide.
Keywords: delicious, eat, face, food, full, hungry, savor, smile, smiling, tasty, um, yum, yummy