Two men are roommates in a hospital. Because they are both weak from sickness, the men are unable to speak for weeks.

Finally, one man says to the other, “American.”

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His roommate replies, “Canadian.”

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Another week goes by and the first man says weakly, “Danny.”

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The roommate can only reply, “Phil.”

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Another week passes and the first man mutters to his roommate, “Cancer.”

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His roommate replies back, “Virgo.”