OMG. I used to work in an office with this very very sweet older woman who believed in astrology and spirits and stuff. Each phone was a full outside line (no extensions). The phones didn't have caller ID though.

I used to call her using the Miss Cleo sound board. Give her fake readings and such. I can still hear the "Hi Dear, how are you?" I'm assuming she believed it, because she would always listen to her weekly reading.