I can cure hiccups by mysterious powers. I'm serious. It's worked every time.
Here's what I do, try it and see if it works for you. Put your thumb up on your right hand (as you would if you are going to shake hands). Now put your hand on the person's chest so that your thumb and forefinger are resting along/on top of the person's collarbone on either side. Look into the person's eyes as you are doing this, very deeply, and think things like 'cure' 'peace' 'rest' and general positive curative stuff like that. And they stop hiccuping!!!
I've done this loads of times and it's worked every time but once.
And if you are doing this on a girl, do not try and cop a feel! Yes you! You know who you are!