Hang on (someone's) lips American phrase
If you are hanging on someone's lips, you are completely attentive to what they are saying.
The kids were hanging on my lips when I was telling them the story of Cinderella.
We are hanging on his lips until his interesting speech ends.
With her elegant attire and surprising eloquence, she can have the crowd hanging on her lips.
The verb "hang" should be conjugated according to its tense.