I Don't Wanna Grow Up
Mario's the only dude in the world who had a mustache before reaching half his grownup height.
This quality design is available in black or kelly green, and printed on a 100% cotton American Apparel tee.
If you love this design, you're in luck! Snorg Tees currently has a large amount of their inventory on sale, starting as low as $9.95. Check out their sale page to see which shirts are discounted: