(In the research they found that being vocal about your suffering helps you to tolerate pain longer.
The problem with that is I don't want to tolerate pain, I don't want to be in pain. I wonder what "Aagh!" does.)
Chinese - 'Aiyao!'
French - 'Aïe!'
German - ‘Aua!’
Japanese - 'Itai!'
Polish - 'Oj!'
Any more?