Celebrate a 25th birthday with a touch of humor! This black t-shirt features a playful design with the square root of 25 and the words 'YEARS OLD' in a vibrant yellow. Made from a comfortable, breathable fabric, it's perfect for casual wear, birthday parties, or as a unique gift for someone turning the big 2-5. The clever mathematical joke adds a fun twist to the traditional birthday shirt, making it a memorable and stylish choice. Show off your fun side with this eye-catching tee!