Humans would put seeds in the ground, pour water on them, and they grow food, like pizza.
8 seconds sound clip from the WALL-E (2008) movie soundboard.
You can hear this line at 01:01:29 in the Blu-ray version of the movie.
Quote context
[...]
- Hey, WALL-E! It's your buddy John. Hi, WALL-E!
- Hi. Hi.
- Hoedown, a social gathering at which lively dancing would take place.
- Auto, Earth is amazing! These are called farms.
- Humans would put seeds in the ground, pour water on them, and they grow food, like pizza.
[...]