The human vagina, when not engaged in coitus, is often much smaller than the local penis. The vaginal tissue, happily enough, has the facility to expand to welcome the visitor and in such circumstances can quite easily double its volumetric capacity and become half as long again.

It is not always realised, however, how capacious the human vagina can in fact be. There is a case reported by Walter (a matter of fact if we are to believe the Kronohausens' interpretation of "My Secret Life"), in which a woman is encouraged to insert as many coins as possible into her vagina. Walter produced five English pounds - "all in shillings" - and attempted to insert as many coins as possible into the woman's capacious tract. "Shilling after shilling I put up her, until forty were embedded in the elastic gully. . ." On and on she went until no less than seventy coins were inserted - "Triumphantly, she walked up and down the room, none falling out of her vagina." In the event the woman, Nellie, managed to retain eighty-four shillings in this manner - "I wish someone would do this every day."

Sources: My Secret Life (full text)