So my lazy villager, Sherb, is one of my favorites. He came up with the idea to call me "Prof. Pie" - Honestly I have no idea where that came from. My in-game character's name is Em and Sherb and I have never talked about what my job is (I am not a professor, sp he's wrong there ) or my love of pie (he got that right). Now my whole island thinks I'm a knowledgeable pie professor, which is fine with me to be fair.
Only Sly has asked to give me a nickname, like three times already. The first one I accepted ("champ") because it was okay-ish, but the next two ("touchdown" both times) I denied because of obvious reasons, lol (seriously, wtf is that nickname). I told him to start calling me "sensei" and now half of them call me that. Sylvana is still stuck in champ phase, but I hope she'll get over it soon.
charlise offered me a really strange nickname which i didn't like at all, and then roscoe suggested 'june bug' which i adored and accepted and goes perfectly with my rep's name of may - although i'm sure he didn't plan that lol. regardless, it hasn't seemed to have caught on yet!
Swan: We'll probably change it when we can but Muffy suggested "Highway" and now a couple villagers call us that, which tbh although we want to change it, it is kind of cute
Antonio gave me the nickname Iron N.
But currently, my nickname is Pumpkin, given by either Pekoe or Flurry. Can't really remember which one of them gave it to me haha.
Buck gave me the nickname "Vitamin A". A few other villagers tried to give me nicknames, and I rejected them, but I don't remember what the nicknames were.