Bad / Strange
ridiculous - Deserving or inviting mockery or laughter due to being absurd or unreasonable; outrageously unreasonable or exaggerated in a way that provokes disbelief.

They laughed when he made the ridiculous claim that he could lift a car by himself, but then lo and behold they watched him actually do it.
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.