Beer fountain is empty hymn

[seanmillion]

a.k.a. It's a long way to the shop if you want to rock n roll

This hymn is sung when someone just realised someone else just drank the last beer. Usually it accompanies some kind of test to determine who is the least drunk such that they can drink drive up to the bottle-o.

[KC Observer]

Sounds like you need a designated shopper.