A friend that helps you with addition when you've been doing so much stuff you've forgotten how to add.
Hey sumbuddy get over here and help me add our meal costs.
by zuakzamme October 26, 2008
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When you ask someone something and the answer should be obvious, one would have this response.
"Is your shirt green yo?"

"You betta axe sumbuddy!"

"Sorry man, I didn't realize it was that obvious"
by night moves a.k.a. katie August 23, 2008
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