Personalized 50th Birthday Funny 50 Year Old Retro T-Shirt. Mens funny 50 year old birthday quote says fifty and still paddling with vintage sunset and bigfoot in a boat. 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.