Yes, this was all Janken's dream. They get National Geographic at the boarding house--Sam leaves copies of it about, thinking that it's an American, patriotic publication--and Janken reads it cover to cover because it always has things about Outer Space that he didn't know. The environmental articles can worry him, and the articles about fracking really tied his tail in a knot.
In the animated series, Red declared a holiday, "Fraggle Fool's Day," for pranking. Red pranked most everyone, and Boober even got into the act by putting something into the laundry to make Red and Mokey's clothes rubbery.
Sorry, that's the end of this story. I'll post more when I have another story to write!