: to close and open one's lips noisily especially before or after eating or drinking She smacked her lips (together) and announced that dinner was delicious.

What does smacking mean slang?

transitive verb. 1 : to close and open (lips) noisily and often in rapid succession especially in eating. 2a : to kiss with or as if with a smack.

What does it mean when baby is smacking lips?

Lip smacking may be a sign that a tooth is about to poke its way through your little one's gums. Teething can be uncomfortable, and lip smacking may offer some pain relief. While teething frequently begins when a baby is 6 to 8 months old, you may notice signs of it as soon as 4 months.