Ever since it first hit stores, the T-shirt has exploded in popularity, particularly among humans tired of being unable to use their arms while wearing I-shirts. Celebrate the timeless gut-cover with today's Groupon: for $20, you get $40 worth of T-shirts, hoodies, and more from Crazy Dog T-shirts, redeemable online.
From humorous hoodies to vintage tees, Crazy Dog maintains a wide array of high-quality clothing for adults, kids, and dogs that's funny on the outside and durable throughout. Customers can pay homage to cult heroes with T-shirts featuring icons such as Chuck Norris ($18.99–$19.99) or lord their familiarity with The Hangover over lesser mortals. Crazy Dog's extensive selection of video game T-shirts ($9–$19.99) shields sensitive skin from the sun with a thick layer of 8-bit nostalgia, and the many tuxedo T-shirts ($9–$16.99) make sure you'll never again have to worry about what to wear to weddings, proms, or arraignment hearings.