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Pompous failed astronomer: So, the reason there was a half moon last night was that the Earth gets in between the sun and the moon [arranges water bottles to demonstrate]. It's kind of like an eclipse, but the Earth only covers half the moon, so you see the rest.
Chick: Oh, okay. Interesting.
Pompous failed astronomer: It's really just thinking logically. Something has to cast a shadow on the moon.

--Bethany Beach, Delaware

Overheard by: not the only one laughing at him