It's time for another round of "Insert punchline here."

This story is verbatim from Agence France-Presse via The New York Times:

SUDAN: APOLOGY FOR SURGICAL MIX-UP

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Health Minister David Homeli Mwakyusa has apologised in Parliament for a surgical mix-up this month that resulted in a knee patient's undergoing a complex brain operation. The brain patient had knee surgery.

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(Insert punchline here.)