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2.
a mulatto that looks very white

also: a white rapper, wigger
"Yo Lateesh! Y'all seen that new kid down the block? His mommy black but he cracker like a wafer!"

"Yeah I've seen him. Down right oops oreo there."
by Psued August 26, 2008
 
1.
A racial term referring to somebody who is white on the outside, but black on the inside. Sometimes also known as a wigger. Could also be compared to a banana/banana traitor.
"What's eminem doing trying to make rap?"
"Ah, don't pay attention to that white boy, he's such an oops oreo"
by Jaered March 09, 2006
 
3.
when you poop on a white girls chest and then tittie fuck her, looking like an oops oreo
i gave carla an oops oreo
by wonderbread January 21, 2005