[[AliceAndBob Alice tells Bob]]: "Outside you're X, but inside, you're (really) Y!" This means that Bob belongs to, claims to belong to, or at least seems to belong to group X but behaves like someone from group Y. This usually implies that Y is evil, intolerant of X, or at best mutually exclusive with X. Ultimately, this is a way to call Bob a phony.

Often used to accuse someone of being a CategoryTraitor.

Contrast PrettyFlyForAWhiteGuy in which a member of group X considers ''himself'' to be a part of group Y though members of Y disagree.

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!!Examples:
[[foldercontrol]]

[[folder:Races]]
* Oreo: Black on the outside, white on the inside.
** Reverse Oreo/"Uh-oh" Oreo: [[PrettyFlyForAWhiteGuy White on the outside, black on the inside]].
*** More commonly, Wigger.
* The British confectionary-related version of "Oreo" is "Bounty Bar", referring to a coconut-filled chocolate bar that is white on the inside.
* Coconut: Brown (particularly Hispanic) on the outside, white on the inside. Also used in Britain by and to refer to South Asians in particular.
* Banana/Twinkie: Yellow (East Asian or Southeast Asian) on the outside, white on the inside.
** "Egg" and "daisy" have both been used for the inverse.
** Less commonly, Pencil: Yellow on the outside, black on the inside.
* Apple: Red on the outside, white on the inside (for Native Americans)
[[/folder]]

[[folder:Political Ideologies]]
* "Melons" or "Watermelons," used by conservatives to describe Greens (green outside, [[DirtyCommies red]] inside)
** Also used by Greens to describe people they feel are just socialists/communists giving lip service to Green ideas because Green is "hipper" or politically safer than Red.
* "Radishes", from communists for moderate leftists (red outside, white inside)
* Rino (Republican InNameOnly), Dino (Democrat InNameOnly).
* "Beefsteak" was used by Nazis to deride former socialists who they suspected of only joining the Nazis / SA / SS due to pressure: brown on the outside, red on the inside.
** And the other way round: After WorldWar2, ex-Nazis joining the Austrian Socialists were called [[http://en.wikipedia.org/wiki/Punschkrapfen "Punschkrapferl"]] - outside red (or pink), inside brown.
[[/folder]]

[[folder:Other]]
* The giant statue of Christ recently built in Poland got some "concrete on the outside, empty on the inside" comments. (Actually, these are both bad as in Poland "concrete" is used to mean something unable/unwilling to reform, such as die-hards of the old regime.)
* "Crunchie" is an (extremely mild and rarely serious) insult to intelligence, meaning brunette on the outside, but [[DumbBlonde blonde]] on the inside.
[[/folder]]

[[folder:Use in fiction]]
[[foldercontrol]]

[[folder: Comic Books ]]

* ''ComicBook/TopTen'' has a robot deriding Joe Pi as being too human by calling him "Spambo" (metal on the outside, meat on the inside)
* In ''ComicBook/DoubleHappiness'', the (Chinese-American) protagonist complains that he's "such a twinkie" (yellow on the outside, white on the inside).

[[/folder]]

[[folder: Film ]]

* In ''Film/HaroldAndKumarGoToWhiteCastle'', Harold (who is Asian) [[DiscussedTrope talks about]] being referred to as a twinkie -- yellow outside, white inside.
* ''Film/WildWildWest'':
--> '''Loveless:''' Mr. West, although you are as black as the night on the outside... [[PunctuatedForEmphasis inside... you... are... yella!]]

[[/folder]]

[[folder: Literature ]]

* In the ''Franchise/StarTrek'' novel ''Literature/SpocksWorld'', when a Vulcan points out that Spock is halfblood, Kirk spends a good few words pointing out his real meaning namely, that because Spock is a halfblood, he's "a fake Earth person", not a Vulcan.

[[/folder]]

[[folder: Live Action TV ]]

* In an episode of ''Series/{{Scrubs}}'', Dr. Cox derides Turk for being whiter than he is.
* On ''Series/VeronicaMars'', Hispanic students who excel in school are called Coconuts: brown outside, white inside.
* In ''Series/PrimeSuspect 2,'' the black British police officer Bob Oswalde is also called a coconut.
* Used as a StealthPun in ''Series/KamenRiderGaim''; Baron's default banana-themed suit of armor is designed to look like a combination of samurai armor and European-style plate-mail.
* On ''Series/AllInTheFamily'' Lionel Jefferson calls a real estate agent an "Oreo cookie", explaining to the Bunkers that it means "black on the outside, white on the inside." The {{insult backfire}}s with Archie, who says, "Yeah, he seemed like a decent guy to me, too."

[[/folder]]

[[folder: Professional Wrestling ]]

* in the UWF "Iceman" King Parsons once called Savannah Jack an Oreo for teaming with Gentleman Chris Adams. (Adams had been Parsons' tag team partner until Parsons had a FaceHeelTurn.)

[[/folder]]

[[folder: Western Animation ]]

* There's an episode of ''KingOfTheHill'' where Khan's idol, Ted Wassonasong, calls him a banana (yellow skin, white inside), after which Khan tries to get in touch with his Laotian culture.
** The lesson is remember your heritage and don't let anyone tell you how to live your life.
* {{Inverted}} on ''WesternAnimation/AmericanDad''. Francine (adopted by Chinese parents) gets a sitcom about her stand-up act, and in the first episode her sitcom parents express dismay at her white husband. When she protests "'''I'm''' white!", her sitcom mother says "You're a reverse banana -- white on outside, yellow on inside!"
* In the ''DrawnTogether'' episode where Ling-Ling gets his "Asian eyes" fixed, Godzilla shows up and accuses him of being a "Twinkie": yellow on the outside, white on the inside.
* On ''TheClevelandShow,'' Freight Train complains that cops won't help black people, in reference to two cops who are both black.
-->'''Freight Train:''' All cops are white on the inside!
-->'''Cleveland:''' ''(cheerfully)'' Like an Eskimo pie, or a coconut!
** In another episode, Cleveland calls [[PrettyFlyForAWhiteGuy Federline]] a "lame inside-out Oreo."
[[/folder]]
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