It was like a cuckoo in his ear, constantly nagging him to take action.
Это было как чужеродная мысль в его уме, постоянно побуждающая его к действию.
Definitions
The phrase 'a cuckoo in (someone's) ear' refers to an idea, suggestion, or piece of information that someone plants in another person's mind, often subtly or persuasively, which then influences their thoughts or actions. It can also imply a persistent or nagging thought that someone cannot ignore.
