A variation of the 69 position. The practitioners lay down; head to toe; back to back. The participants then twist their backs around at the waist. Each of the participants' heads are now facing the butt of the opposite person. Oral to anal sex ensues.
Connor: Oh hey Nick, how was your weekend?
Nick: It was great, I totally pulled a twisty nine on this chick!
Connor: Woah dude you're flexible!
Nick: It was great, I totally pulled a twisty nine on this chick!
Connor: Woah dude you're flexible!
by Krindy-Applesauce van de Merwe July 6, 2010
 Get the Twisty Ninemug.
Get the Twisty Ninemug. by sanfred January 20, 2011
 Get the Back Ninemug.
Get the Back Ninemug. by Kurt March 22, 2005
 Get the Nine Ironmug.
Get the Nine Ironmug. when two partners arrange their bodies to perform any type of foot play on one another at the same time
by Himothy P-Hill July 26, 2022
 Get the Feety Ninemug.
Get the Feety Ninemug. A Geometry Dash level famous for its epileptic effects on its wave part. It also started the Nine Circles Level Decoration Style (NC), where levels follow the decoration style of NC, and created a massive series. Therefore, Nine Circles also means this decoration style as an adjective.
by BladeX123uWu November 10, 2022
 Get the Nine Circlesmug.
Get the Nine Circlesmug. by FriesAndTots August 9, 2023
 Get the Stinky Ninemug.
Get the Stinky Ninemug. A phrase that you scream randomly out of nowhere to release your energy when bored. Origin; New York.
by heyyyywhatup9193 May 21, 2023
 Get the Nine a melmanmug.
Get the Nine a melmanmug.