When was the first time you found out that what DC says isn't true?

As for me it was when I was 6 years old. In an LD I asked my family member when will we have the phone - that time it was hard to get any home phone - and he looked at me and said "never". Following year we finally bought a phone. Until that dream I thought that DCs in dreams are right and what they say is true. Fortunately I've found out quite early that it is otherwise.