Celebrate an 18th birthday with this humorous t-shirt. The design features a square root symbol with "324" inside, followed by the phrase "years old" in a stylish blue script. Made from a comfortable, breathable black fabric, this tee is perfect for casual wear or as a fun birthday party outfit. Its classic fit suits various body types. It is an ideal gift for those with a sense of humor turning the big 1-8! Show off your wit and birthday spirit with this unique and memorable shirt.
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Our tees fit true-to-size. Check the size chart before ordering to ensure a perfect fit.
Processing 2–3 business days; standard delivery 5–12 business days depending on destination.
Machine wash cold with like colors. Do not bleach. Tumble dry low. Iron inside-out if needed.