Final answer:
The metaphor in the last two lines of Hamlet's apology to Laertes implies that Laertes' own choices and actions have led him to his current situation.
Step-by-step explanation:
The metaphor in the last two lines of Hamlet's apology to Laertes is 'drink the poison of thy fortune.' In these lines, Hamlet suggests that Laertes has been wronged by his own circumstances, not by any external forces. Hamlet is implying that Laertes' own choices and actions have led him to his current situation, and he must take responsibility for them.