There could be many interpretations of such a phrase. Maybe it's about some comical or absurd situations where things go wrong in a very extreme way. But again, without clear definition, it's just speculation.
A young artist might have cocked up her first big art exhibition. Maybe some of her paintings didn't turn out as she hoped, they seemed 'hard' to look at in terms of the result she desired. But she took the criticism well and used it to improve. She experimented more and now her works are much better and well - received.
Since the phrase is so ambiguous, it's hard to come up with examples. If 'cock up' means to mess something up in a big way, perhaps it could be stories about big blunders in business or projects that had really bad consequences, but this is just a wild guess.
Another story could be about a young athlete. He cocked up his big race by not warming up properly. His legs felt like they were made of lead (hard) during the race. He was really disappointed in himself. But instead of giving up, he worked on his pre - race routine and became more successful in future races.
This is a rather vulgar and inappropriate expression. If we break it down literally, 'cock' can refer to a male chicken or be a vulgar term for a male sexual organ, and 'up my ass' is an extremely inappropriate and vulgar description. But it's not a phrase that should be used in polite or general conversation.
Not at all. Whether it's academic writing, creative writing, or even casual writing like a blog post, this phrase has no place. It goes against the norms of good writing which include using clean, appropriate language that doesn't shock or offend the audience.
Rather than exploring the meaning of such offensive terms, we can shift our attention to well - written, ethical fanfiction that promotes good values and interesting storylines.
In science fiction, there might be some unique growth concepts related to large - scale or extreme biological changes, but I can't recall a specific 'planet sized cock growth' story off - hand. It's not a common or mainstream theme in typical science - fiction works.