Top definition
The act of not doing anything, ever. No matter how small, important or otherwise, the ability to react to a situation is muted by a complete lack of motivation and understanding.
I asked him what he wanted to do tonight, he said "I don't care!" he's really mean.

No he's not mean, that's his Nondoinganythingness acting up again.
by Doctor Eyeball November 01, 2009
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