We all say OMG or appa or amma as a reaction when we hear something or when we get hurt physically or mentally or even when we see someone is hurt in front of us or........Some people use "i iiiiiiiiooooooooooooo". It is quite common to use any of these words often for many reasons. I am going to share the explanation(in the form of a story) given by my late grand mother why we shouldn't say "Iiiiooo" This word is used mostly by Tamlians. Once a small boy was cutting a branch from a tree, he was sitting on the side where if he finishes cutting, he will surely fall alongwith the branch. Shivan-Parvathi was looking at this scene from up (Gods always see what we are doing, never think that we are alone, even if u r alone in a room). Parvathi: Look there (pointing down at the boy in the tree), let me go and stop him from falling from the tree. Shivan - No, no, just wait. May be he will realise how he is sitting and change his position to avoid falling. Parvathi - (She was not convinced) Shivan - ok, When he is falling, he is surely going to call amma or appa for help, if he says appa, i will go and catch him and save him, if he calls amma, you go and save him. Parvathi: ok (She was convinced) and said, he should say amma as i cant see him like this. The boy finished cutting and fell from the tree, while falling he screamed"IIOOO" and did not say amma or appa. And Lord Yama dharma raja came down and took him. He came down bcos the boy was calling his wife's name. Lord Shiva - parvathi couldnt do anythingas they would have come and saved the boy, if he had called amma or appa. So that's why elders say that we shouldn't say IIOO as IO is the wife of Lord Yama and when we say IO, our life will be taken by Yama as he is the God of death. Patti says your life span will decrease every time you use this word. She said it is better to call amma, appa or call any god's name instead of "eyeo", so that God will come and protect us. So now you all know, it is better to say mg: or appa or amma. If you know any other reason why we use it, plese share your experience.