means "never ending supply"
or so many that it last for many days..

Who fucking knows anymore? First, it meant factual, and now it means fictional. What the fuck, internet... what the fuck?

An adjective describing an indefinite, but painfully large, period of time or amount of something.

This phrase is often doubled: "for days and days" to stress an even larger period of time or amount of something.

(Usage Note: In Northern California, this is often paired with the word "Hella" to add even further emplasis)

The posession of a large quantitiy of something that will last a prolonged period of time, typically used by the pronography or the grocery retail industries. Can be used in a variety of contexts.

something that is going on for a long period of time

A quantity of time more than three but less than five days.