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."
ayon kay swirler
ika-08 ng Agosto, 2009