>>299899
>The hell are you even talking about? Are you high or something?
Let's count the assumptions you've made in your original post
>but in equestria where the ponies eat what is far closer to a regular human diet
>a filthy mudpony can't properly wash its own backside or practise proper vaginal hygiene
which implies one, there's no other way for pony to clean itself by means other than hooves or magic
two, technology (even the primitive one) is literally not-existent in Equestria
and finally, the same assumption >>299877 made: >ponies are 1:1 irl horses anatomy-wise
a whopping 4 arbitrary assumptions must be made in order to prove your post
Also, elaborating on the technology bit, have you ever seen a fountain?
Heck, have you ever seen a river, or a pond for that matter? You know you can walk into those, right? And it's not like you can't get wet without ever reaching with your fronthooves to the backside when you're neck-deep in water, you know?