Personalized 40 Cleverly Disguised Toddler Long Sleeve T-Shirt. It's your 40th birthday, and you're cleverly disguised as a responsible adult. Funny b-day humor! A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.