My granddad was a general practicioner. Back in the "old days" GP's did everything from basic medical care, to surgery, to "popping babies". When he would get a call from his Exchange that a woman was in labor he would leave the house cheerfully telling us he was off to pop a baby. My childish brain had a terrible picture of him pushing on a mom's tummy and the baby somehow just popping out of her. Was never sure when I was little how or where, but it sounded just awful to me and certainly not something to be cheerful about!