I’m sure some SDopers must remember that “Wet Dream” song full of very fishy, fish puns and/or sexual innuendo? Is there a story behind that song? Was it written for a TV show, perhaps? What else would possess someone to write this piece of carp? …and, who DID write/sing of anyways?
It’s a novelty song. What is there to get?
Not this one? The Fugs : Wet Dream - YouTube
For some reason, I have it stuck in my head that it came from something first, like a TV show, and evolved into a novelty record. Anyone else feel the same? Anybody? …Anybody at all? 
…Oh, btw, for the record? I have a similar feeling about that “Barbie Girl” song (I’m a Barbie Girl, in a Barbie World). Did that come from something else first before going “solo”? I dunno…maybe I’ve just lost it! :o
Not to my knowledge in either case. Kip Addotta has a number of comedy talk-songs, many punny, so that’s just his thing (or one of his things. He’s a stand-up comic.)
As far as I know and could look up “Barbie Girl” was written as a social commentary, and was even the target of a lawsuit by Mattel. I have no idea where you got the idea that it was from something else.
Someone else remembers it!
I was going to say “I’m glad someone else remembers it,” but I’m not even sure I’m glad I remember it.
I was surprised when neither of the previous mentions included the original - a song full of single entendre - and by far the best song of that title.
Max Romeo - Wet dream
I certainly remember the song – it was a staple on the Doctor Demento radio show in the '80s.
I don’t have any recollection of it being anything other than a novelty song, though I wonder if you’re recalling the video that silenus linked to, and thinking it was from a TV show.
Is it possible you’re somehow conflating the song with the short-lived animated TV series Fish Police?
Only six episodes. That really floundered.
It must’ve jumped the shark early. 
Decades ago, I saw Kip Adotta doing that entire “song” without music, as part of his stand-up comedy routine. A long monologue full of groan inducing fishy puns.
I guess he added music and made the routine into a novelty song later.