Personalized Petroleum Engineer (Worlds Best) Baby Bodysuit. Petroleum Engineer Baby Bodysuit - Heather & Smoke w/ Ears engineering job shirt has a white and blue worlds best logo, a nice present for a thank you appreciation gift. Our unisex 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.