Immediately after a hiccup, blow out all of your air... then without taking a breath swallow as many times as you possibly can. It is easier if you have a pint of water that you can use to chug without taking a breath.
Teaspoon of sugar. Now, I ain't talkin no sissy queer lib sugar like mung fruit, or some raw type sugar, or whatever, I'm talkin a good down home, American made, pure white graduated sugar. Made by Sam, on the corner of Purple Mountains Majesty Lane, and Amber Waves of Grain Boulevard. It brings a year to my eye, and it'll also cure your hiccups, as paw used to say. Paw is dead.