Characters
Reebs. That’s what we used to call them when we was kids. It’s beer spelled backwards.
— Early Grayce · Kalifornia

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A childhood nickname for beer becomes a small lesson in reversing letters. The speaker explains the private term as though sharing an old custom. Its simplicity supplies the humor: the unfamiliar word turns out to contain exactly the familiar drink, only backwards.
Context reviewed