IT'S A TRAP
From The LURKMORE Wiki
A meme based on the line by Admiral Ackbar in Star Wars: Return of the Jedi; started on Fark around 2002, and spread to the rest of the internet from there over a period of years before ending up on /b/.
Later, "IT'S A TRAP" took on a new meaning, being used in response to pictures of men who appear to be women, degenerating into "IT'S A TARP", which is basically the same thing. It then gave birth to the term reverse trap, referring to a female cross-dresser.
