I have a similar story but it's not about astronomy, but anyways, here goes:
I was talking with a friend while having lunch at the University one day and we were talking about hyenas. One girl who was sitting near us said: "what's a hyena...Oh that's like in the Lion King?" (the kids movie). Although I didn’t know who she was I replied: Yeah but the real ones don't speak.
Ouch! Don’t quit your day job!
-------------------- Jimmy
If you could stop time, for how long would you stop it?
"...since that time, I have not complained about the weather one single time. I’m glad there is weather." – Alan Bean, Apollo 12