It could be for a bet or a dare. Peter's friends dared him to wear Tony's clothes to school for a day. Peter, not one to back down from a challenge, takes on the dare. He shows up at school in Tony's clothes, feeling a bit self - conscious at first but then starts to embrace the whole situation and even has some fun with it, like pretending to be Tony for a while.
Perhaps in a post - apocalyptic fanfiction setting, resources are scarce and Peter finds Tony's clothes. Wearing them gives him a sense of hope and protection. It could be that the clothes have some built - in defenses that Peter discovers while wearing them. Or maybe Peter is trying to inspire a new generation of heroes by wearing Tony's iconic clothes. He could tell stories about Tony to the younger ones while wearing them, passing on Tony's legacy in a very tangible way.
Well, it could be really interesting. Maybe Peter would feel a sense of power or confidence that he associates with Tony. He might start to act more like Tony, adopting his mannerisms. It could also be a bit of a comical situation, like the clothes being too big for Peter and him looking a bit silly but still trying to pull off Tony's cool style.
Peter might get mistaken for Tony. If Tony is popular or has a certain reputation, Peter could find himself getting the same kind of attention. Some people might come up to him thinking he's Tony and ask him about things that only Tony would know. This could lead to some really awkward or hilarious moments as Peter tries to either play along or quickly correct the misunderstanding.
One possible scenario could be that Stiles accidentally grabs Peter's clothes thinking they are his own. Maybe he's in a hurry to get dressed and doesn't notice until he's out and about. It could lead to some comical moments as people react to him wearing Peter's distinct style.
Well, it could be that in the fanfiction, they argue about technology. Peter, being the brilliant young mind that he is, might have different ideas on how to use or develop Stark tech compared to Tony. Tony is more experienced and perhaps set in his ways, so when Peter challenges him, an argument ensues.
One possible reason could be jealousy. Maybe Peter has some natural talent or ability that Tony wishes he had, and this makes him mean. For example, if Peter is really good at something like coming up with innovative ideas quickly, and Tony, who is used to being the smartest in the room, feels threatened.
Yes, there are many fanfictions with this concept. Writers like to explore the dynamic of Peter being Tony's son as it adds an interesting family - like relationship to the story. It often involves Peter having a closer bond with Tony, getting special training or mentorship from him, and facing various challenges together within the Marvel universe.
I think Rhodey would be a likely character. He was Tony's close friend, so he would be involved in verifying Peter's claim and guiding him. Also, Aunt May could play an important role. She has raised Peter and now has to come to terms with his new identity. And there could be some other Avengers like Natasha or Clint who knew Tony well and could offer their perspectives on this new family revelation.
Perhaps Peter failed to follow Tony's instructions regarding some important technology or protocol. Tony, being a perfectionist and concerned about safety, would then yell at Peter for not listening. In the fanfiction world, this kind of conflict adds drama and tension to their relationship.