Show off your passion for geology with this unique t-shirt! The design features the witty phrase "That's what I do, I collect rocks, and I know things," perfect for rock hounds and science enthusiasts. The graphic includes an image of a rock and picks, adding a touch of humor and geeky charm. Made from comfortable fabric, this shirt is ideal for casual wear, rockhounding adventures, or geology club meetings. Makes a great gift for the geologist in your life! The bold graphic is sure to turn heads and spark conversations.