Well, it could be the ones that are full of humor and family - related themes. Maybe the stories that involve the Griffins' own family adventures and the crazy things they do, which he then relates to the characters in the books he tells about.
It depends on the day. Sometimes Stewie might be in a bad mood and not be as receptive, but on most days, he likely enjoys the special time with Peter and the stories he tells.
I'm not entirely sure which specific 'Peter Griffin Never Ending Story' you are referring to. It could potentially be a fan - made or very niche story related to Peter Griffin from 'Family Guy'. Maybe it's a creative exploration of his character in an ongoing, never - ending narrative.
He probably uses a lot of funny voices for the different characters in the book stories. Just like how he acts out different situations at home, he would do the same for the story characters, which makes it more engaging.
Since I'm not well - versed in 'Peter Griffin gay fanfic' specifically, it's hard to say for sure. But generally in fanfics that explore non - traditional relationships, themes like acceptance, self - discovery, and dealing with prejudice might be present. It could also involve re - imagining Peter's relationships with other characters in a new light.
There could be some 'Peter Griffin gay fanfic' out there, but it's not something that is widely known or mainstream. Fanfic communities are quite diverse, and different writers may explore different aspects of characters. However, it may not be as common as other types of fanfics related to the 'Family Guy' series. If you're interested, you might start by looking at fanfic forums dedicated to the show.