During the arousal cycle the giver may begin to rhythmically move the inserted finger partially in and out, so as to stimulate the rich and super sensitive nerve endings around the anus.
英
美
- 在進(jìn)入刺激的一個(gè)循環(huán)過(guò)程中，給與者可以一開(kāi)始有節奏的進(jìn)出移動(dòng)插入的手指，這樣子可以刺激到肛門(mén)周?chē)舾胸S富的神經(jīng)末梢。
