Wow, this is really interesting. I got pretty stuck in some places, but I did manage to get to the end~ It's a bit hard to rate since a lot of its shortcomings are clearly related to the platform; I will admit I find the Atari 2600 soundscape uniquely difficult to listen to.
It would be nice if it was a bit clearer what could be jumped on -- I spent a lot of time on the ghost before I realized that I wasn't expected to completely avoid it.
Unless I'm missing something, the horny here seems pretty subtle. But then, I'm realizing by now that every time I'm not sure what the horny is, I just assume there's a sperm/egg metaphor going on. ...which would be pretty hot.
Uh, anyway. Overall, I had a fair bit of fun with this one despite the frustration at points. I'd also be super interested to learn more about how this game was made. Do you have any plans to make the source code available?