You shouldn't throw out someone else's mail.
Jeffrey lives in an apartment serviced by a rookie mailman, who accidentally delivered his neighbors mail to Jeffrey.
Jeffrey wants to get rid of his neighbor's mail.
Jeffrey slides his neighbor's mail under the door of his neighbor's apartment.
Jeffrey throws his neighbor's mail in the trash can after sorting out his own mail.
Jeffrey's neighbor appreciates his consciousnesses and returns the favor whenever the rookie mailman accidentally gives Jeffrey's mail to the neighbor/.
Jeffrey's neighbor fails to pay several bills included in the mail Jeffrey threw out, and gets their utilities cut off.