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1.
Short for "I'm Going To". Very similar to umma. Can be used online or in real life. Used either as a joke or by wangsters.
Person A: Ummuna log off now, peace!
Person B: Kthxbai

Person A: Ummuna go to taco bell, wanna come with?
Person B: Fo sho
by sandstorm810 February 22, 2011