1) an oreo simply with the vanilla outside instead of the chocolate outside.
2) putting the filling of an oreo on the outside and putting the cracker in between.
"Damnnnnn!!! Look at that reverse oreo! its not as thick as a regular oreo tho..."
"how many times have i created a reverse oreo? A lot! Did i get sick? MAYBE."
a white person that does stereotypical black person activities
"that guy's white as snow but he plays basketball and likes KFC, he's a total reverse oreo"