To be fair, I often tell people I have my Masters degree in Remote Sensing and GIS, but it's really a Master of ARTS degree in Geography, from the "Geology and Geography department."
I tell people I have a B.A. in American and European history from Purdue University (the astronaut school
), but my diploma just says "history." Under the requirements in effect when I started in the program, I was required to complete a major concentration in American, European, general, or non-Western history. I pursued the American history concentration, but I ended up completing enough European history courses that I also fulfilled the requirements for the European history major concentration, without double-counting any courses except those that were common to both programs (such as modern world history). Therefore, I effectively "double-majored" in American and European history, though such double-major was not recognized by the University. So someone looking through old Purdue catalogs might conceivably have occasion to question my credentials.