This humorous black t-shirt celebrates a 40th birthday with a playful design. The shirt features a light pink text that reads "HOW OLD IS FORTY?" followed by age breakdown in days, hours, minutes, and seconds, concluding with the simple statement "= OLD". Made from a comfortable-looking fabric, this tee is perfect for anyone who enjoys a good laugh about getting older. It's an ideal gift for a friend or family member turning the big 4-0 and makes a statement at birthday parties or casual outings. Embrace the humor and celebrate in style!