So my kids never really believed in the Easter Bunny (past the age of 5 or so) because one year they looked out the window and saw us hiding eggs in the yard.

When my son was about 10 he called us out on it and said "I know that you hide the eggs, I saw you doing it!" We laughed and said, oh yeah, like the Tooth Fairy.

And then we watched him get super sad because I guess he had believed in the Tooth Fairy until that very moment.

Oops.