Idiom of the Day
crackpot
an eccentric person with ideas that do not make sense to others, a crazy person
The man is a crackpot and you never know what he will do next.
Fact
The largest cell in the human body is the female ovum, or egg cell. It is about 1/180 inch in diameter. The smallest cell in the human body is the male sperm. It takes about 175,000 sperm cells to weigh as much as a single egg cell.
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