Fooling The Post Office!
A new UNC grad was sent to the post office to mail an important letter. A short time later the UNC grad returned with a suspicious smile on his face. His boss inquired if the letter had been sent & the new UNC grad replied, " I just fooled the people at the post office and saved the company money at the same time!
When no one was looking, I dropped the envelope in the mail slot without buying a stamp."