A man and his son are in a car crash

Question: A man and his son are in a terrible accident and are rushed to the hospital in critical care. The doctor looks at the boy and exclaims "I can't operate on this boy, he's my son!" How could this be?

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Question: What can be broken but never forgotten?

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Question: What goes in the water black and comes out red?

Question: What loses its head in the morning and gets it back at night?