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Gabby Windey is shaking what her mama gave her ... and her wife, Robby Hoffman , can't get enough, playfully patting the "Traitors" winner on the rump in a video set to go viral.

Check it out ... the ex "Bachelorette" star gets down low and twerks during an outing with her wife of 7 months. Robby gets a kick out of her lady's spicy moves, too ... joining in on the fun by slapping Gabby on the behind a number of times. Play video content

The pair are currently enjoying a little summer getaway on Fire Island in New York, with GW revealing earlier this week that the trip was actually a belated honeymoon.

She also captioned her recent Instagram post ... "Honey mooners."

And, from the looks of the other uploads on IG, the twosome are certainly feeling the newl

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