The Interpretation of Dreams by Sigmund Freud Chapter 9 Page 22

Her chief complaint, however, was in her own words as follows: She had a feeling in her body as if something was stuck into it which moved to and fro and made her tremble through and through.

This sometimes made her whole body stiff. On hearing this, my colleague in consultation looked at me; the complaint was quite plain to him. To both of us it seemed peculiar that the patient's mother thought nothing of the matter; of course she herself must have been repeatedly in the situation described by her child. As for the girl, she had no idea of the import of her words or she would never have allowed them to pass her lips. Here the censor had been deceived so successfully that under the mask of an innocent complaint a phantasy was admitted to consciousness which otherwise would have remained in the foreconscious.