Well, one version of the Jeffy Scary Story could be about Jeffy getting lost in a spooky forest at night. The trees were all gnarled and seemed to reach out like claws. He heard strange noises all around him, like whispers that he couldn't make out. Every step he took, the ground seemed to shift beneath him. As he walked deeper into the forest, he saw a faint light in the distance. But when he got closer, it turned out to be a pair of glowing eyes that belonged to some unknown, terrifying creature. He ran as fast as he could, not looking back until he finally found his way out of the forest.
Since I don't have the specific details of 'Jeffy's Bedtime Story', it might be a story that focuses on Jeffy's daily experiences during the day which he reflects on at bedtime. Maybe it's about how he made a new friend or learned a new lesson, and as he's about to go to sleep, he thinks about these things and that forms the bedtime story.
Obviously, it's Jeffy. Since the story is named after him, he is most likely the central figure around whom the story revolves. He's probably the one having all the experiences, whether they are exciting, scary or just ordinary, that make up the bedtime story.
The unknown elements make the Jeffy Scary Story so terrifying. We don't know what's going to happen next. For example, if Jeffy is in a strange place, we don't know what kind of creatures or dangers lurk there. It plays on our fear of the unexpected.
Definitely not a true story. FNAF is a work of fiction that takes place in a fictional world with its own set of rules and scenarios. It's all about creating a thrilling and immersive gaming and storytelling experience, not reflecting reality.