When I was in grad school our department had a meeting every morning where we could get together to discuss the latest papers which we called "Morning Coffee" (or also Astro Coffee). These discussions were pretty fruitful and regularly would inspire new papers.
After writing a new paper based on one of these discussions one of the professors decided to commemorate the contribution of Morning Coffee to the paper and added "M. Coffee" as an author. At some point word got out that M. Coffee was not a real person. From what I understand the journal got very upset. Nevertheless, the original author list still stands:
After writing a new paper based on one of these discussions one of the professors decided to commemorate the contribution of Morning Coffee to the paper and added "M. Coffee" as an author. At some point word got out that M. Coffee was not a real person. From what I understand the journal got very upset. Nevertheless, the original author list still stands:
https://ui.adsabs.harvard.edu/abs/2001ApJ...556L..59P/abstra...