Jet Stream has just turned 40.

He's never been a fan of birthdays, particularly at his office. The love of his employees, colleagues, and co-workers has always felt like a hollow version of the love that he truly wanted: the love of a family.

This birthday is particularly biting: even his beloved daughter, the one pony who loves him completely will be away, at her mother's junkyard. That means he's going to spend the whole night miserable and alone, contemplating how he could end up as a 40-year old with all the things in the world... except for the things that really matter.

But maybe a certain filly has a surprise in store for her dear dad... one that will end up causing him to have a very happy birthday?

Warning! Contains: Ambiguous age (teenage) / oral / light bondage / tickling / big endowment / slight cumflation / oral / feral rutting

Cover art by Pestil

Disclaimer: All ponies in all of my stories are over 10,000 years old in earth years as Equestria is at the base of a major gravity well.