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When a homosexual or bisexual "comes out" (of the closet) and then changes their mind and pretends to be straight again. From "The Lion, the Witch and the Wardrobe" by C.S Lewis, where you go in the wardrobe (closet) to get to Narnia.
"What happened to your ex, Naomi?"

"Oh, she went back to Narnia."
by Naomi January 23, 2005
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