Our anonymous ad sales guy remembers when coming back from lunch hammered was not only not frowned upon it was required:
There was a time not too long ago, a Golden Era, if you will, when life was better for the media salesman. We call it the 1980s. Back then, there was a tonic a soothing panacea for the fear and ennui engendered by modern life. They called it the Three-Martini Lunch.