forgot to say that its not an american thing, its a proley brit thing. its done because people in the uk used to sleep with shoes on, shift work was such that you had to be out of bed and into work as fast as possible so your wages didn't get docked. they had clocks mounted on the side of factories to ensure that everyone was in by the time the bell rang, this carried over to the united states like all the monstrous effluvia of british industrialisation :DDDD
don't know why it filtered up, probably the same way all such things do. lower class people getting rich
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