Note: mirrored from Adult Foals and Diapered Crusaders.

I know - who'd want to give up diapers? But it's clear enough from canon that most ponies (and other cretures) eventually do. So in this thread discuss:

• General headcanon about potty training in current or past Equestria and it's neighbours.
• Specific ideas about how characters form the show were either trained themself or would train their kids.
• Any cute pictures that can be found of ponies on potties.

That is, if you want to?