Mary J use in my industry is almost a prerequisite. An entertaining, and true, story.
One of our supplier (rep's we'll call him Ed) comes and visits us at Scioto on a semi regular basis. Normally about twice a year he comes intot town from his home base and takes us all out to dinner. He's a really great dude, very fun, incredibly smart, and VP of sales at a reputable Electricity supplier. He comes in one day and were all sitting around the conference table talking business and making jokes when one of us references that working for a broker has it's benefits, one of which is no HR department. I quip that it's a good thing we don't drug test. His response is that they don't either, but if they did, it would be to ensure that you have a high enough level of cannabis in your bloodstream to be at work. We all chuckle, and then he relates a story of a time when he was having a rough day, sitting in his office when the CEO of his company walks in, tell him to go home, smoke a bowl, and come back, so he could get some shit done.
That night we were out until 3 in the morning, and spent a significant piece of time at a hookah bar on high st. Best business meeting I've ever been involved in.