slow as (slower than) molasses (in January)

slow as (slower than) molasses (in January)

Extremely dilatory. This simile is American in origin, dates from the midor late nineteenth century, and is a vivid one for anyone who has ever tried to pour cold molasses from one container into another. “He’s slower than molasses,” wrote J. W. McAndrews (Monologue, ca. 1880).
See also: molasses, slow