A sex act that involves two partners and a stuffed animal. The top partner cuts two holes in the stuffed animal, and thrusts through it into the bottom partner, creating a threesome with the stuffed animal.
(The Inverse of a Pillow Sandwich)
ex:

Partner One: "I really, really love my giant stuffed teddy!"
Partner Two: "How much do you love it?"
Partner One: "Enough to do an Inverted Pillow Sandwich, if you're interested."
by Il Reverso April 7, 2016
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