Repetition Isn't Usually such a huge deal, but there are times when it can be annoying. For example, if you describe a little Lolita in one of your stories as having "soft, silky, honey colored shoulder-length hair," that's fine. When it becomes annoying is when you use that same, precise, word-for-word phrase to describe her hair thirty times throughout your story. Change up the adjectives each time you mention her hair. That goes for pretty much any descriptive phrases in your story. By the time you've told me twenty-five times that your cock was like an iron rod, I not only have the idea, but I'm utterly sick of visualizing it. Trust me here - this is coming from a woman who adores cock. When I've gotten sick of visualizing the one you're describing to me, you've repeated yourself far too much.
The Point Here is to try and change your phrasing, your adjectives, etc. It will make for a much more interesting story and it will also keep your reader much more engaged in what's happening with your characters.
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