Top definition
An oreo cookie with both cookie parts turned inward. Frequently results in the creme being stamped with a reverse image of the cookie design on both sides.

One side being turned inwards is called the mystery backwards oreo.
Bill: *is eating oreos* Oh man! I got a magical mystery backwards oreo!

John: Aw. I only got a mystery backwards oreo.
by Lump sum September 01, 2009
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