Some ideas seem totally normal to us until we are asked to explain them to a child. Little Guy (4 1/2) and I had this conversation this week.
Little Guy: Why is Spiderman called Spiderman?
Me: He was bitten by a spider and that gave him super powers.
Me: (thinking) That sounds nuts, I can't believe that's a believable movie plot!
Little Guy: Oh, it's probably because he can make spider webs.