In part 10 of WTPMTTA, who was the giant monster rampaging in city? a giantess version of Arrietty (just for that weird guy who wanted your pony hating character to make her big) or Godzilla?
Pooh's Adventures. A meme that sounds quite regular for a strange mind at first, but when you find out that they have plans for a family-friendly "Pooh's Adventures of Avatar", then everything is ruined.
Join me as I take on the worst and most bizarre of these fan-created crossovers, watching as much as I can and browsing the wiki to see what other ideas they have up their sleeves (and won't bother to complete).