fart in a windstorm vs whistle in the wind

fart in a windstorm

noun

Something utterly insignificant, ineffective, or fleeting.

whistle in the wind

verb

To attempt something that is futile; to say something that is not heeded.

How often have the words fart in a windstorm and whistle in the wind occurred in a corpus of books? (source: Google Ngram Viewer )