to smack one's lips
01
to be really excited for something that is about to happen
![to [smack|lick] {one's} lips definition and meaning](https://cdn.langeek.co/photo/42668/original/?type=jpeg "to [smack|lick] {one's} lips definition and meaning")
Idiom
Informal
例
As the roller coaster climbed to its peak, the thrill-seekers smacked their lips in excitement for the exhilarating drop that awaited them.
02
to show one's strong desire to eat something by closing and opening one's mouth loudly
例
She licked her lips while she waited for the food to be served.
