This humorous black t-shirt features a mathematical design. The square root symbol encloses the number 100, with the words 'Years Old' printed underneath in bold, yellow letters. The clever design suggests that the wearer is the square root of 100, making them 10 years old. Made from a comfortable material, this tee is perfect for birthdays, casual wear, or as a fun gift for someone turning 10. Show off your unique sense of humor with this eye-catching and playful t-shirt.