whistle in the wind

as the wind blows

According to any given circumstances.

blow the whistle

To disclose information to the public or to appropriate authorities concerning the illegal or socially harmful actions of a person or group, especially a corporation or government agency.

break wind

To expel gases generated during digestion, especially through the anus; to fart.

candle in the wind

A fragile or vulnerable thing, likely to be put in jeopardy.

clean as a whistle

Very clean.

finger to the wind

An attention to or focus on or awareness of current or prevailing trends, public opinion, or shifting circumstances.

four sheets to the wind

Extremely drunk.

get the wind up

To become frightened or disturbed.