デジのガールフレンドはリラックスすることを学ぶ

Required is a slow, bit-by-bit process, letting one's fingers wander softly along both sides

of each lip, inching slowly upwards and downwards.

Very gently, one can let one's fingers circle around the lips, using a little oil if required.

The man's tongue is more sensitive than his fingers, and again, he might first let it

glide along the lips.