Maybe a werewolf parody?

I did something with wolves

How about a weight gain story about Yoshi as he gains massive amounts of weight over time after eating some strange Halloween candy he found and eventually becoming the size of a island after quite some time of gaining weight? You could have his Yoshi friends react to him as he's gaining weight if you want to.

Hmm. I may think about that.

Remember me? Inflat-a-Toad?

How about a scary, nightmare endusing story?

You know, I was planning something like that on the 31st.