The $10 t-shirt deal of the day over at RIPT Apparel is the Spider-Man-themed shirt with a nod to Calvin and Hobbes called “Scientific Progress Goes Thwip” by Ninjaink.

The sale at RIPT began today, Wednesday, March 21, 2012, at midnight CST, 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 for $10 each in charcoal. Kids sizes are $15 (Boys and Toddler in gray; Girls in black); Onesies are $18 (in gray). You can also get the design on a Hoodie for $38 (in Men/Unisex sizes in charcoal).

From the artist:

Ninjaink, Ninjaink
Does whatever a ninja can
Tee designs, any size
Catches geeks, just like flies!
Lookout! Here spills some Ninjaink.

“Scientific Progress Goes “˜Thwip'” is a collection of strips featuring Peter and Venom. The title refers to a chronological series dealing with Peter’s “Cloner” cardboard box, which creates a duplicate of him named Ben. At first beneficial, the antics that follow result in a humorous chain of events leading to an identity crisis and a return to things as usual.

What do you think?

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