be a fly on the wall

To eavesdrop on a secret conversation.
How I wish I could be a fly on the wall to hear what my fiance's parents are saying about me!
Categories: verb

An client error occurred: Error calling GET https://www.googleapis.com/youtube/v3/search?part=id%2Csnippet&q=%22be+a+fly+on+the+wall%22&maxResults=4&videoEmbeddable=true&videoSyndicated=true&safeSearch=strict&type=video&key=AIzaSyCfLRuAZZNAQm6a5uDzgY-Tt668bxsppCs: (403) The request cannot be completed because you have exceeded your <a href="/youtube/v3/getting-started#quota">quota</a>.