>Ending up on earth
>Ending up in equestria in an adult body
>Reincarnating into equestria
How does this work for you?
>On earth
Could survive, would be tough. Government would want to take and study you, assuage them by promising to donate your body to science when you die and remind them that the law still protects you as you are still a citizen, enjoy celebrity status. Make Hasbro seethe by posting your opinions on ponies online.
>Equestria adult pony
The ideal situation. Adaptation easy, much happier than any other position.
>Reincarnating into Equestria
If you start as a baby it doesn't matter, but if you start as yourself, but arriving after you die, that's just a delayed option 2. Good shit either way.