The mysterious smiling kid
An entire scene might be spoiled by one extra. It has occurred in far too many films, including Titanic. Passengers in third class try to flee to the upper deck as the ship slowly sinks and the decks fill with water.
The crew tries to keep them below, but they encounter locked gates. Everybody is going crazy, but one child is actually smiling? Any child would be upset just by looking at all these grownups yelling and sobbing, even if they were unaware of what was going on.
