With the extreme success of
Answers to awkward social situations, I think a spin-off is necessary. We often find ourselves in a social situation that is not awkward yet, but very well could become so. Well, never fear, I can tell you what NOT to do to create an awkward social situation. Keep in mind this is not how to address a currently awkward situation. For that you should consult the previous goEMAW blockbuster.
Here is a great example:
Dinner tomorrow with another family whose husband doesn't drink. He used to, but just doesn't now. I'll probably be drinking because the wife still drinks. Do you ask why the person doesn't drink? Try to find out why he doesn't drink through a third party? Just ignore it?
Not awkward, but the potential is very strong if the wrong social move is made!
What not to do:
Offer to buy drinks for the whole table, but then point at the guy who no longer drinks and say loudly, "Except this guy, he apparently has a problem. Give him another goddamn glass of water with lemon". Afterward, pointedly look around the restaurant to see how much attention you brought.
If you don't do the above, you should be OK.