To behave or act as though one is unconcerned, unafraid, or carefree in the presence of something troubling, frightening, or potentially dangerous; to pretend there is no danger.
To attempt to ward off fear, anxiety, or bad news by adopting a show of casualness or bravado rather than confronting the issue.
Examples:
EN: - I'd whistle past the graveyard, but my lips are afraid to be separated.
ES: Sudaría al pasar por el cementerio pero tengo la boca totalmente seca
EN: Time and time again, I hear twenty and thirty-somethings whistle past the graveyard, as it were.
HI: और सचमुच 20-30 मिनट बाद, मैंने पहले ही "हुर्रे" के नारे सुने।