I'm not aware of any specific 'big cock naruto x dc fanfiction' as the term 'big cock' is inappropriate and not in line with general family - friendly content. However, there are many normal Naruto and DC crossover fanfictions that are great. For example, some might focus on Naruto characters in the DC universe facing off against classic DC villains or teaming up with DC heroes in unique adventures.
A possible plot could involve Naruto being mistaken for a new meta - human in the DC world. As he tries to find his way back home, he ends up in the middle of Gotham or Metropolis. His kindness and strength start to draw the attention of female characters. Superman's cousin, Supergirl, might see him as an interesting addition to the hero community, while Catwoman could be interested in his skills for more self - serving reasons. This creates a harem - like situation where Naruto has to deal with different female characters with different motives.
Well, Wonder Woman is an obvious choice. Her strong - willed and noble nature would be an interesting contrast to Naruto's more free - spirited ninja self. Another could be Zatanna, with her magic abilities. She might be curious about Naruto's chakra - based techniques which are somewhat similar to magic in a way. And then there's Starfire, whose alien nature and exuberant personality could lead to some fun interactions with Naruto.
Naruto's chakra - based powers and Raven's magic - based powers could potentially combine in really cool ways. For instance, Naruto could use his Rasengan and Raven could infuse it with her dark magic, creating a super - powered attack. Or Naruto could use his Shadow Clone Jutsu, and Raven could use her telepathy to control the clones in a more strategic way.
Well, in this fanfiction concept, perhaps Naruto's rasengan could be combined with Cyborg's energy blasts for a super - powerful attack. Also, Naruto might share his story of perseverance with the Titans, inspiring them to keep fighting no matter what. And the Teen Titans could introduce Naruto to their world's unique technology, which he could find useful in his own battles.
The characters would interact in various ways. Naruto would likely be curious about the Teen Titans' powers. He might challenge them to friendly sparring matches. For instance, he could spar with Beast Boy, who could transform into different animals, providing a unique combat experience.
One interesting plot idea could be a crossover where Naruto's world is invaded by a threat from Raven's DC New 52 universe. Naruto and his friends team up with Raven to fight this new enemy. Maybe they have to combine their different powers like Naruto's jutsu and Raven's magic to defeat the powerful foe.