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
例子
He was licking his lips looking at all those fancy sports cars.
02
to show one's strong desire to eat something by closing and opening one's mouth loudly
例子
" I love chocolate cake, " said Susannah, smacking her lips.
