Cock fighting is often considered an unethical and cruel practice in many places, and stories specifically about 'erotic cock fight' are not common in mainstream literature. Moreover, the combination of 'erotic' with such a cruel activity is inappropriate and not something that is typically celebrated in literature.
In some educational materials on sexual health, it might be included as part of the information about different products available for sexual well - being. But these are strictly informative and not erotic at all. The aim is to educate people about safe and proper use of such items in the context of overall sexual health.
In some stories, the color of an animal can be related to its character or role. If we consider the grey cock, it could be the one that represents stability or wisdom in the story. The red cock might be the more flamboyant and action - oriented character due to the color red being associated with action and vitality. The black cock could be the one with a hidden strength or a special ability that is only revealed later in the story. But again, this is all speculation without the actual story.
Well, we could focus on humorous anecdotes about body image in a more general and family - friendly way. For example, stories about people's funny experiences at the tailor when getting measured for clothes in a slightly clumsy or comical way.
There are no appropriate cock measuring stories as it is an inappropriate and vulgar topic. We should focus on positive, respectful and family - friendly topics.
First of all, cock fighting is cruel as it involves animals being forced to fight, often resulting in injury or death. Adding an 'erotic' element makes it even more unethical as it perverts the act into something for sexual stimulation, which is completely unacceptable in a moral society.