If the common people wrap themselves in double-layered sheets during winter in the third class, how long can the windows of first and second class remain closed?

Through the vivid metaphor of a train's travel classes, this couplet offers a sharp yet witty critique of social inequality. While the ordinary masses huddle together against the bitter cold in unreserved coaches, their enduring struggle hints at a simmering awareness. The poet gently asks how long the privileged elite, secluded in luxury, can keep their windows shut and remain indifferent to the reality outside.