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A phrase most frequently used over the internet. This is a polite way of saying " I don't wanna do what you wanna do , so fuck off . "
" Dude, wanna come over? "

" I unno man "

" .. "
I unno by deanispenis November 11, 2009
Related Words
Conjuntion of "I" and "dunno".
"Where'd all the pie go?!"
"umm... I'unno... "
I'unno by Nibs07 November 30, 2006
It is derived from: "I do not know"
It was changed to: "I don't know"
Then: "I Dunno"
Finally: "Iunno"
"When did that happen!?"
"Uh.... Iunno."
iunno by Kavkid June 11, 2006

Shiii’iunno 

Southern talk meaning: Shit, I don’t know.
Bob-Jim: Hey Jim-Bob, who clogged da shitta?

Jim-Bob: Shiii’iunno, Bob-Jim!
Shiii’iunno by jomama217 August 24, 2011
another way of saying "i don't know"
often used in online chatting
iunno by frank meng July 18, 2003
"I dont know", but really fast.
Usually AIM slang.
lkdsf0990 : "what did you do today?"

kjdsfh900: "iunno."
iunno by doodooheadnicole October 12, 2005