Pass one's sell-by date reach a point where one is useless or worn out. With allusion to the date marked on a perishable product indicating the recommended time by which it should be sold.
pass on the torch pass on a tradition; the expression comes originally from the Roman poet Lucretius (c. 94–55bc) in De Rerum Natura. The reference is to the torch-race of classical antiquity, in which the runners carried lighted torches and (in some cases) passed them on to other runners stationed at certain points.
See also pass the parcel.