Personalized Rockin' For 40 Years Anniversary Baby Bodysuit. Two happy rocks under a banner that reads Rockin' for 40 years is a humorous anniversary gift design to tickle the funny bone of friends and family celebrating 40 yeqars together. Our one piece baby bodysuit make great gift for newborns, babies, infants, baby showers and expectant moms. An ideal gift for any new parent who will want one in every color.