The $10 t-shirt deal of the day over at TeeFury today is a Firefly-themed shirt called “Mudder’s Milk” by artist bisqueets.

The sale began at Teefury today, Wednesday, August 31, 2011, at midnight EST, and will continue for 24 hours from then, and once it’s over, it will not be sold on the site anymore.

The t-shirt is available in men’s and women’s sizes in dark chocolate for $10 each.

Here’s what the artist had to say about the design:

Mudder’s Milk is the, uh, beverage of choice in Canton. It’s not exactly delicious, though. I am not really a fan of Miller Lite (haha), so I figured it would make a good parody! Plus, it’s definitely a more subtle nerd shirt–so if you like to keep your nerdiness low-key, this would be a great shirt for you. :)