An
obscure sexual maneuver popularized in
Russia, in which the vagina and anus are simultaneously penetrated, with a
thumb and two fingers, respectively. The rectum is then pushed outwards into the cervix, where it is rotated by the two fingers.
"Darryl gave you the three-fingered
bus driver?"
"
Yeah. It was the most horrifying experience of my
life. After that we went to Olive Garden."