Difficulty: none, what do you expect from a story about sex?

A stranger arrives in Ponyville wanting to visit it, just like the Main 6 he's heard so much about.
After discovering how friendly the residents of Ponyville really are, he discovers that some are too much so.

I don't know what else you want me to write in the description, it's about sex between two ponies in the form of people and it doesn't matter where or why, everyone is only interested in the part where they pound. Or am i wrong?