I was on HN this morning and my 2 yr. old son asked me "What's that orange thing papa's looking at?"
I answered "It's a place where people can talk to each other about things they find interesting." He didn't get it, which makes sense since it isn't really a "place" and there are no visible "people" here.
So I figured I would propose it to you all, how would you explain HN to a 2 year old?
I consider curiosity in a child to be a valuable resource to nurture. If you make it a positive experience for the child, he'll want to do it again. Careful not to appear annoyed, because then, as it resulted in a negative experience, the child will know to avoid doing such things in the future.