I know the feeling. The only person I know in real life who I can have an equal Egypt discussion with is the librarian at my school. (And it can't be helping my reputation much to be constantly chatting with the "Book Nazi" as everyone calls her.
) Most other people either just get confused right away, or say something about the mummy's curse or Egyptians shaving their eyebrows when their cats die or whatever...
Tadukhipa your account brought back memories. After years of talking Ancient Egypt with my classmates. One came to me after the "big" 9th grade achievement exams saying.
" Your constant talking about Egypt really helped me... i recongized that one picture on the test as Egyptian because of you... Thanks"
So keep talking even if others do get confused! Who knows they might thank you too one day