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This is commonly used when a one of the couple gets so hot, he needs to stand by an open window and flap the curtain so to create a draft circulation. The female is left on the bed, and then must use the above phrase to entice her man back to bed.

Puns of a various nature can spawn from this saying.
"Flap my curtain till the neighbours complain!"
by MissRainbow January 20, 2017
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