Funny design. World's Greatest Uncle Father's Day Gifts T-shirt. Perfect Gift Idea for Uncle, Grandpa, Dad, Daddy on Father's Day, Grandparent day, Thanksgiving, Christmas, Holidays, Birthdays, Memorial Day World's Greatest Uncle T-shirt Father's Day Gifts Shirt. Awesome present from kids, mom, grandma, Aunt, Son Daughter for Uncle,daddy, dad, grandpa, pa, pop, poppy, grandad, papa, husband, men, friend on Father's Day, Birthday, Christmas Lightweight, Classic fit, Double-needle sleeve and bottom hem