shortened version of "i dunno", which is a shortend version of "i dont know", which is a shortend version of "i do not know"

A man who messes around with other men, but no one would ever know by looking or talking to him. Used by gay black men to identify masculine gay men or DL Brothas.

Basically the same thing as iunno, it is a quickened version of "I do not know", used in both chatting and in informal speech.

It's history may trace back to Homer Simpson, who often makes a sound that is in between "iono" and "iunno". (Says a lot about his intelligence, doesn't it?)

12 year-old internet chatter's way of saying "I don't know."

retarded way of spelling i don't know

Slang for "I don't know"

This is the slang version of the phrase, "I don't know?"