I Have The Hiccups. Dispense Upon Me Your Make-Shift Hiccup Cures
 

Spoonful of sugar.

The only true cure is death.

Hold your breath until the hiccups stop.

...So basically what Krylo said.

Look in the mirror.

There's two methods of attack, and both work 100% if you aren't weak.

1) Attack the physical. Hiccups manifest as a result of the diaphragm spasming. Clench that diaphragm! Claim somatic control!

2) Attack the mental. I don't really know what the jist of the mental loop for them is, but suffice to say, if you think of something else entirely, you will stop hiccuping.

read the killing joke.

Chug liquid of some sort.

That either will cure it or provide some hilarious entertainment for those around you.

I'm already drunk.