Like, etc. the sound of your own voice
Definition 1 of 1
Pro Tip 1/3Potential Negativity
May imply someone is self-centered and not interested in others' opinions or contributions. 
He barely asked any questions; just liked the sound of his own voice the whole conversation.
Pro Tip 2/3Colloquial Usage
Used informally, might not be suitable for formal writing or speeches. 
At family gatherings, my uncle always likes the sound of his own voice.
Pro Tip 3/3Indirect Hint
Can be used to hint that someone should let others talk without being too direct. 
Might be nice if others could also get a word in - some people really like the sound of their own voice.