Also known as: おまんこサンドイッチ, 小穴三明治, 阴部对压(二女)
A form of Human Stacking where two girls lay on top of each other Face-To-Face, with their pussies together, clothed or not. This may involve Tribadism, Take Your Pick, or Cooperative Pussyjob. The two characters' rears are usually facing the viewer.