spit in(to) the wind

spit in(to) the wind

To do something totally pointless, fruitless, or futile; to waste one's time doing something that will not or cannot come to pass. To be perfectly honest, I feel like voting is just spitting in the wind, so I don't even bother. My mom and dad spent years spitting in the wind trying to get my brother to take his studies seriously; in the end, he dropped out anyway to pursue a career in music.
See also: spit, wind
Farlex Dictionary of Idioms.

spitting in (or into) the wind

a futile or pointless activity.
1996 Daily Telegraph Both the Church report and the atheist professor are spitting in the wind, of course, because the incoming tide of superstition has a long way to rise yet.
See also: spit, wind
Farlex Partner Idioms Dictionary
See also:
  • a fast talker
  • (I) wouldn't (do something) if I were you
  • a/the feel of (something)
  • a straw will show which way the wind blows
  • a crack at (someone or something)
  • all right
  • (you) wanna make something of it?
  • all for the best
  • a thing of the past
  • a slew of (something)