John is a stay-at-home dad. Today he is with a group of stay-at-home moms as they all watch their kids play. What topic of conversation would be LEAST successful for John to bring up in order to stimulate the discussion?

Current events

Explanation:

In a situation such as this, the group is more interested to talk about other subjects than the experiences to raise their children. Because of that, in order to create a discussion, to receive good feedback and, most importantly, to maintain the discussion, John should be talking about the current events that are happening around them. By current events I mean ordinary situations or something that is influential, not only in his life but on the lives of everyone.