A moth has no stomach.

Hmmm i wonder where da food goes

it poops right away!

This only applies to the larger moths, like the Atlas moth. They have no properly developed mouth or digestive system. This means that they can't eat, so they don't live for long. Species life expectation ranges from 5 to 15 days. As a caterpillar, they eat a lot and save fat. When they're a moth, they use the fat from their caterpillar life. When this runs out, they starve to death.