A common method of getting home after a long night on the turps. Essentially means walking, however the state of intoxication means that you will usually have no recollection of the journey on the beer bus, but will instead wake up wondering how you got home, undressed and into bed.
Riders of the beer bus may also wake up with a memento of their travels, possibly a traffic cone or road sign.
Jono: How'd you get home last night mate?
Chris: Oh I just caught the beer bus, got home about 4.