Techniques to stop Hiccup

A hiccup is a repeated involuntary spasmodic contraction of the diaphragm, immediately followed by a sudden closure of the glottis.

Almost all hiccups are one-sided; that is, only one side of the diaphragm contracts.

Overeating or excessive drinking is the most common cause.

It causes the stomach to extend downward and press against the diaphragm which then starts its hiccuppy motions.

But that information does not help solve the problem.

Here is advice that may.

A high blood carbon dioxide level is known to stifle hiccups. A well-known procedure is to breathe into a paper bag. Blow in and out exactly 10 times, and do it very hard until you are red in the face. You must do it fast, and you must form a good seal around the bag so no air gets in.
Hold your breath as long as you can, and then swallow when you think a hiccup is coming. Do that 2-3 times. Then take a deep breath and begin again. Hold your breath in for as long as possible, then exhale and hold that as long as possible.
Blow air out in a slow, steady stream and hold your breath, while extending your head as far backward as you can.
Swallow a teaspoonful of sugar, dry. It often stops the hiccups in minutes. The sugar in the mouth probably sends different signals along the nerve routes, interfering with the hiccups.
Close your mouth, hold your nose and ears closed with your fingers and thumbs, and swallow 3 times before you let go. This creates a slight vacuum and changes the rhythm of the diaphragm enough to bring relief.

Stand behind the person as he sits on a chair. Grasp the neck gently with your fingers and, with the thumbs, slowly massage down each side of the spinous process.
Fill a glass of water, bend over forward, and drink the water upside down.
Apply pressure with the flat of the hand, just below the breastbone.
Take a deep breath and drink 10 swallows of water while not breathing.
Put ice on the neck or drink catnip tea.
Place light fingertip pressure on each side of the neck, for about a minute.

Take exactly 10 sips of water in rapid succession.
A sneeze sometimes stops the hiccups.
Have someone pull on your tongue.
Lie on the left side for 10-15 minutes or stand on your head.
Deep breathing or have someone massage your feet.
Drink a half glassful of fresh orange juice.
Take a hot bath for 15 minutes or place an ice bag on the pit of the stomach.
Bend at the waist, to touch the toes, and hold this position for about 60 seconds. This method is useful for both adults and children.
When children run around and play, sometimes they end up with hiccups. When that happens, try tickling him while he holds his breath, and tell him to try hard not to laugh. He will forget about the hiccups.

All of these methods work for some people.
See what is best for you.
You will notice that these techniques are frequently based on diverting attention, changing the ongoing physical hiccup pattern, and getting the body to do something different for a few moments.