tribbingのようなどんな単語でも探してください。
 
1.
Mid-coitus, getting your finger, generally the middle one, three knuckles deep in her ass and giving a little spin, or "swirl."

Usually done as a complete surprise.
"I gave her the old three knuckle swirl, she fucking loved it!"

"I tried the three knuckle swirl on her, she wasn't having it."
swirlerによって 2009年08月08日(土)

Words related to three knuckle swirl

finger idb shocker spinner swirl