here are 2 methods for curing hiccups, one self-administered (Parr style) and one non-self administered and thus a billable service (Becker style)
Parr style: take *DEEP* breath... hold it ... slowly count to 10 while holding ... swallow ... exhale *SLOWLY* (also called the *waiting to exhale* method. ps I snuck into that movie in what year for double bonus points?) Active ingredient: diaphragmatic retraining
Becker style (as treater): ask hiccuper to tell you *right before* they're going to have their next hiccup. Stare them in the eyes and wait with them. They may hiccup once or twice and say 'oh -- I just did.' Gently scold them and say 'no -- you have to tell me *right before* the hiccup.' Active ingredient: unintentional mindfulness