A word meaning as if either you don't care, you have no idea what the person is trying to say or you don't know the answer to a question you have been asked.
e.g. - "Who you go for red or blue?"
"Meh?" (Meh with question mark meaning i don't know)
- "Do you like your tea like this or that?"
"Meh" (Meaning I don't care as in either way)
- "You like nerds or non-nerds?"
"Meh?" (With question mark meaning i don't know and i don't care at all about it!)