Keep Calm It's My First Father's Day Funny Gift for a New Dad T-Shirt BEST GIFT idea for a new Dad to celebrate his first Father's Day. Surprise your Husband, Brother, Son or any new Dad for his 1st Fathers Day. OUTSTANDING FABRIC QUALITY! SUPER FAST SHIPPING! Official Teestars Merchandise. Among our products: t-shirts, tank tops, long-sleeve tees, sweatshirts and hoodies. We offer a large variety of colors andsizes for men, women and kids. Our garments are top quality, designed to give you maximum comfort and style. All of our designs are made in-house by Teestars.