Heyo, horny idiot here, just wondering what the abbreviations mean? I know what CTF is, but am entirely oblivious about the other two..
UDTF: https://www.furaffinity.net/gallery/postalroo/folder/32338/Upside-Down-Transform... - upside down transformation! https://transformation.fandom.com/wiki/Upside_down_transformation
ATF - Ass Transformation >_> - don't worry, there's nothing gross involved :>