Fill two tall 12 oz. glasses with cool water and set them on a table in front of you. The second glass is for just in case you finish the first one, if you # really need it.
Close your eyes and settle yourself. Confidence and positive thinking is important here, so chill out and loosen up.
Pick up the first glass and wait for a hiccup. Just after it hits, begin drinking slowly, steadily and continuously until the glass is empty.
Try not to think about hiccuping as you set down the empty glass. Hopefully you'll have interrupted the rhythm of the hiccups, but if not then you'll have to go to the second glass.
Drink the second glass of water, slow and steadily, and do your best to remain calm and relaxed. By the time you've finished, the hiccups should be gone.