If you think some celebratory traditions are strange, you've clearly never experienced National Sleepyhead Day. This Finnish holiday, which is observed each year on July 27, might sound like a great excuse to spend the day napping—but sleeping is the last thing you want to be caught doing. If you're the last person in the house found snoozing on National Sleepyhead Day, prepare to be awoken in the rudest way possible: with a bucket of water to the face.

That's just one of the weird and wonderful holidays that Mental Floss Editor-in-Chief Erin McCarthy is celebrating in this all-new edition of The List Show.

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