— No, I’m not taking a piss. I do program clouds, for real. Have you heard of such a thing? — And why would you do that? — To make them rain.
Cessna 210 (OE-DSD), rebuilt for cloud seeding
Two silver iodide generators.

CC BY-SA 2.5 · Christian Jansky · Wikimedia Commons · licence
The generator, close up

CC BY-SA 2.5 · Christian Jansky · Wikimedia Commons · licence