Personalized Las Vegas Stays At Grandma's Youth T-Shirt. Funny Las Vegas Youth T-Shirt - White for kids and grandmas says WHAT HAPPENS AT GRANDMAS HOUSE, STAYS AT GRANDMA'S HOUSE. Cute gift for any grandchild and fun for Grandma too! Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.