Our Black Friday shirt is sure to impress your friends and other Black Friday shoppers with a basic mathematical proof showing that Black Friday is evil. But if Black Friday is evil, do you really want to be right? See the design here.

But seriously, we believe in doing good. That's why we're donating 10% of our profits to the Salvation Army to support all of their amazing and life-giving work, especially during the holidays. Thank you for your support.

All shirts come in a variety of colors.

Buy quickly while there's still time to get it shipped before Black Friday!