My Mable used to get them something fierce. She outgrew them, as I recall now. Bo has never had them that I know of and Bo has had them maybe twice? I would sure like to know WHY though. That's a great question.
As a bartender for many years, I used to have a dozen "cures" for the hiccups. The one that always worked was a concoction/ritual using sugar and bitters. I think the taste shocked you out of having them....