lick/smack your lips
smack (one's) lips
1. Literally, to lick one's lips in anticipation of eating something delicious. This nutritious recipe is sure to have your kids smacking their lips!
2. By extension, to eagerly anticipate something with great pleasure. Property developers have been smacking their lips at the thoughts of getting their hands on such prime real estate.
3. To make unintentional smacking noises with one's mouth, especially when speaking. Try not to smack your lips when you lean into the mic, it's really loud in the headphones.
lick (or smack) your lips (or chops)look forward to something with eager anticipation.
1997 Guardian Headhunting agencies licked their chops at the prospect of the fat placement fees.
lick/smack your ˈlips
1 move your tongue over your lips, especially before eating something good
2 (informal) show that you are excited about something and want it to happen soon: They were licking their lips at the thought of clinching the deal.