When there is something wrong with you usually when your ill or when someone has made you feel bad emotionally
"I feel meeeh"
"im ill/feel bad"
Pronounced in conjunction with a hand gesture, as if spoken by a barking dog shadow puppet. Used in place of any noun, verb, or adjective, preferably interjected randomly into conversation or at the end of a sentence.
You shoulda seen that, meeeh.
"Meeeh" is the sound leeches make. But since it developed by younger people, it is now the universal sound for practically everything. It is pronounced with a very squeeky voice.
Here are some examples:
Katy is trying to scare Jack. She is wating around the corner, and Jack walks by as Katy yells : "MEEEH!". Jack is startled.
Robert randomly says "MEEEH". Everyone laughs and proceeds to do the same sound.