While it's debatable on whether marijuana will lead to harder drugs, it's now fact that it can lead to laziness.
Here's the story of a postman who got so lazy after smoking so much pot that he decided to burn mail instead of delivering it:
Neil Goddard, 32, was given a 12-month sentence after he set up a huge cannabis factory in his bedroom and managed to cultivate 8,000 pounds of the drug.
But he smoked so much of it over a year-old period that he was too high to bother delivering thousands of items of post.
So let's revise that (unofficial) postal service motto: "Neither snow nor rain nor heat nor gloom of night shall stay these couriers from the swift completion of their appointed rounds, but pot surely can!"