The three latest mental_floss shirts were added to our store this morning. To celebrate this joyous occasion, all of our shirts, new and old, are currently on sale for the brilliant price of $14.90. Just enter the code “newtees” during checkout.

Thanks again to readers Cyntianna Ledesma (Derive), April Russel (Inconsistency) and Sharen Starkweather (Tomato) for their submissions. And if you have a great idea for a mental_floss t-shirt, your creativity could earn you $125. Send your slogans to flossytees@gmail.com.