素晴らしいエロいbjコンピレーション

one of the oldest erotic texts, also deals with the topic of fellatio.

In doing so, the Kama Sutra lists

As if coitus, the mouth surrounds the head of the penis and moves about as though the penis were inserted in a vagina.

Biting the sides, the woman gently nibbles on the side of the shaft.

Outside pressing, the lips press together the tip of the head, then kiss it as if to draw it out.