Top definition
Usually meaning ''Double or nothing''. Usually said by nerds or geeks. Most commonly associated with a fat green blob in a gray addidas sweatshirt clinging to the ceiling of your closet. Yoshi.
Mario: Man, I did Peach a few seconds ago, should I do Daisy now?
Yoshi: Dubbo Nuttin!
Luigi: ...Mario. She's my wife.
Mario: Exactly.
Yoshi: Dubbo Nuttin!
by Knuxer March 26, 2008
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