Personalized It's My Birthday. Beer Me. T-Shirt. It's my birthday! Beer me! When you're at the bar, celebrating your birthday, you want everyone to know what you want. A tall, frosty glass of beer makes for a great birthday whether you're 21 or 101. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.