Kudo Shinichi was casually walking down a street when he saw a certain brunette girl, known to the world as Mori Ran. She looked at him strangely and spoke cautiously.

"Shinichi?"

"Yes, Ran?"

"Why is there a rubber duck on your head?"

"One. It's not a rubber duck, it's a rubber ducky. And two, it's 'International Rubber Ducky' day!"

"Um… since when?"

"Since I said so."

"Shinichi. You are seventeen. Seventeen-year-olds don't wear rubber duckies on their heads."

"Oh."

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HAPPY INTERNATIONAL RUBBER DUCKY DAY EVERYONE!! A few weeks ago, my friend wrote a note on the 21st of April in my school planner. It said 'International Rubber Ducky Day - Bring a rubber duck to school.' And thus, today this story was born. (It's hard writing with a rubber ducky balancing on your head!)