Precision advertising

On the subway today. Three subway cards in a row over the seats. On one end, an ad for The Discovery Channel’s “Dirty Jobs with Mike Rowe” that says “there are 1.4 million porta-potties and they don’t empty themselves.” On the other end, another ad for the show that says, “NYC has 900 miles of sewers. They don’t inspect themselves.”

In the middle, an ad for “Airborne” cold remedy. In case you catch something.