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At Christmas, we all give each other a set of underwear, which once you receive you have to say, “ooh thank you” really loudly, stand up, then put the underwear on your head to show everyone. I had to have a serious conversation with my wife after her first Christmas with us.
Edit: forgot to add that the underwear must remain on your head, like a fancy crown, until all presents have been given out, and all members of the family were wearing said crown.
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