Another cure for hiccoughs is as follows: Put the thumb up against the lower lip, with the fingers under the chin, and say, “hiccup, hiccup, over my thumb,” nine times.
Northern Ohio.

Another cure for hiccoughs is as follows: Put the thumb up against the lower lip, with the fingers under the chin, and say, “hiccup, hiccup, over my thumb,” nine times.
Source: Current Superstitions (1896), entry 850.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.