Deep Throat(1972)

How far does a girl have to go to untangle her tingle?

Linda's frustration with her inability to achieve orgasm causes a friend to recommend that she see a sex therapist about her problem. During the exam the therapist discovers that Linda's clitoris is located in her throat and recommends deep throating as a treatment to her ailment. Linda then goes on to experiment with this new technique as she searches for a husband.