Digital rectal massage was then attempted using a slow circumferential motion. The frequency of hiccups immediately began to slow, with a termination of all hiccups within 30 seconds.
I have to admit that, when I read that, the first words that sprang to mind were “Holy crap!”.
“From now on, I will be recommending sex — culminating with orgasm — as the cure-all for intractable hiccups.”
Great … that’s two occasions now, on which I have an excuse to utter that immortal  phrase.
On a point of semantic pedantry, however, I‘d just like to point out that, if the hiccups are intractable, an orgasm won’t cure them either.
 I thought I was immortal but it turned out to be dyslexia.