Rule 63 posts are posts in which established blogs turn their character into the opposite gender for a while (as opposed to blogs who's characters are permanently of the opposite gender to their canon counterparts: these are listed here).
Sometimes these can last for several posts or entire story arcs.
- Ask Palette Swap (here)
- Ask Discord Whooves (([part 1)) ((part 2)) ((part 3)) then it goes into Semi-NSFW.
- Ask Surprise (())
- Ask Demopony (())
- Princess Molestia has ((genderbent Big Macintosh)) (SFW)
- Durring the VDC, a couple contenstants suffered a case of rule-63, for example [] (Wonderbolt Soarin') and  (Wing Ace. With Soran' having the more common poison joke treatment in the form of a pie (it IS soarin') and Wing Ace due to dimensional instabilities nearly releasing another pony sealed inside him.