Bad
fairytale - A children's story about magical and imaginary beings and lands; or something that is too good to be true or seems unreal.

He told a fairytale about how he got the job, but no one believed him, and people suspected that he had a relative in management.
senile - Used to describe behavior, mental states, or conditions associated with aging, especially when a person becomes forgetful or confused.

The elderly man showed symptoms of becoming senile, like forgetting where he put his keys, but with support, he managed to live independently for a while.