During Tyneside's heyday as a shipbuilding area there were a number of Rum 'n Egg bars near the shipyard gates. One still existed in Howdon in the 1950s and was pointed out to me by a pensioner who remembered these historic institutions very well.
Apparently these pubs had a long thin bar fronting the street with a doorway at either end. By tradition, you entered at one end, progressed along the bar and exited by the other door.
Lined up along the bar were rows of glasses of strong dark rum and a (peeled) boiled egg on a saucer. This was breakfast for the shipyard workers, who began work so early in the morning that they had merely bundled out of bed and rushed off to work with nothing in their bellies. It must have been very invigorating for the workers as the neat rum hit their stomach - a real awakener!
The old bloke told me that the barman watched like a hawk as the shipyard workers dashed through, each slamming down a tanner (sixpence in old money) on the bar before throwing down the rum at a gulp and departing, munching on their egg. It was all done on the run, no-one lingered or even stopped at the bar or the flow would have been broken.
How I would like to experience a Rum 'n Egg bar today!
It was part of a whole world of working-class culture which has been forgotten.