Pick out any 4lines from the poem a pin has a head in which the speaker plays with words for parts of the human body. Explain the word play.

Rivers run, though they have no feet (flow)

A timepiece may lose, but cannot win (a watch can stop or lose time, but it cannot jumo forward)

A clock has a face, but no mouth there (the clock's face marks the hours)

A hill has no leg, but has a foot (the foot is the base of the hill)

Baby crows, without being a cock.