This is an officially licensed Nintendo product. 1Up Mushroom - Mushrooms - Nintendo T-shirt

"It's simple cause and effect! Explain the new match to your friends and family with this ""Super Mario Bros."" t-shirt. The black tee perfectly illustrates the way things work in the Mushroom Kingdom: Mario chases mushroom, Mario catches mushroom, Mario becomes Super Mario! Navy 100% Cotton Officially Licensed Standard Fit More Nintendo items: Nintendo Merchandise"

This is an officially licensed Nintendo product. This t-shirt features Mario jumping through coins.

This is an officially licensed Nintendo product. This shirt features a pirhanna plant from Super Mario Brothers 3 and says "Oh Snap!"

"Any veteran of Nintendo's classic ""Super Mario Bros."" series can relate to this educational tee. The black Nintendo t-shirt features prints of five different Super Mario Bros. mushrooms alongside the words, ""Know Your Mushrooms: Extra Life, Power Up, Block, Reverse, Poison."" (Warning: Not all mushrooms are power-ups.) Black 100% Cotton Officially Licensed Standard Fit More Nintendo items: Nintendo Merchandise"