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Why was the vibrator invented?

Why was the vibrator invented? from John Strömstedt
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Why was the vibrator invented? The vibrator was invented to treat hysteria in women. from

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Sperm Whales actually sleeps vertically.

Sperm Whales actually sleeps vertically. from John Strömstedt
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Sperm Whales actually sleeps vertically. Did you know that Sperm Whales actually sleeps vertically? from