Ever since his appearance in Equestria and moving in with the Cakes, Steve has been working for them to try and eventually afford his own place someday. He finds his job at Sugarcube Corner to be... Really boring. Save for Pinkie, who has become a good friend of his. So, as his mind wanders one day, he comes to on odd realization. An odd realization he wants to joke with Pinkie about.
... Silly Steve.

(Just made off of a random thought I had. Rated Teen and Sex only for incredibly awkward scenarios; no sex happens.)