Read the pun, keeping in mind that a jest is a joke and a pump is a shoe.

mercutio: well said; follow me this jest now till thou hast worn out the pump, that, when the single sole of it is worn, the jest may remain after the wearing sole singular.

romeo: o single-soled jest! solely singular for the singleness.

—romeo and juliet,
william shakespeare

which words are used as puns in these lines?

what effect do the puns have on the passage?