The term 'menial laborer, metaphorically' can be summarized as a COG in a machine. This phrase is often used to describe someone who performs a mundane task that is necessary for the functioning of a larger system. The term is derived from the idea of a COG in a machine, which is a small wheel or gear that helps the larger machine to function. It implies that the person performing the task is not particularly important, but their work is essential for the functioning of the larger system.