Personalized Keep Calm and Go Fishing Toddler Long Sleeve T-Shirt. Keep Calm and Go Fishing. When things get bad, don't panic. Just go fishing. Funny gift for anyone who loves to fish. 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.