We want to say THANK YOU to all of our blog readers by offering a SPECIAL OF THE DAY every day through the holidays. So, here's today's. You can visit the mental_floss store anytime today and get 10% off on any of our fun t-shirts. Pavlov, Freud, Easter Island, Pluto, any of them. When you're checking out, you'll see a space for a discount code. Fill in the word "shirt" (without the quotation marks) and the discount will be applied. Thanks again for making this blog so much fun for us!

By the way, if you're looking for a fun holiday gift and t-shirts aren't your thing, check out our Holiday Subscription Special and our Gift Certificates.