I'm serious. Are you assuming that any given slave was some sort of multi-purpose pocket tool? "Rastus, go clean the yard. Rastus, fetch some lemonade. Rastus, catch this baby."
Any given slave was probably used for a lot of tasks. They cost serious money to purchase, and it takes money to feed them all year long. If it was the off-season for growing/harvesting crops I would think they did other things too. A few years of this and they would be pretty damned versatile.
I mostly agree, but I'd add that it was likely the house slaves that did these type of things, not the field hands.
Even in the 2oth century there is often a basic stereotypical assumption that women know something about babies. I remember reading an account by a young woman (I think she was a stewardess by trade) during the evacuation of Saigon at the end of the Vietnam War. You know when they were packing babies onto American jets and flying them out. She wrote that "Apparently since I was a woman they assumed I must know how to handle a baby. We barely landed and I was suddenly holding two crying babies while someone was trying to hand me a third".