Similar to the "69" sexual position, the Figure 8 (or Ate) occurs when the participants forgo the genitals and perform oral sex on each other's anuses. This move requires a further bending of the neck and a touching of the stomaches resulting in a figure 8 position of the bodies.
Friend 1: "Dude you got totally twisted last night!"
Friend 2: "Yeah man that butt was looking so right I had to taste it. She returned the favor too - we was all Figure 8."