This action takes place when a woman is in the upside down vertical position ( legs in the air ) whilst two men approach her vagina and asshole atop her, back to back. The double penetration takes course as both the men bend down in opposite directions, thus, forming the magnificent double hung window.

No awkward eye contact. Just the occasional sweaty cheek rubbing.
Me and my pal double-hung windowed this floozie last night. I was much more comfortable than when we Eiffel Towered her.
by Digety June 4, 2019
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