A G-string tie is a method of bondage popularised by John Willie. He regarded it as exceptionally difficult to escape from, claiming that even Harry Houdini did not like trying to escape from it.
John Willie's published description is here.
This article is based on "G-string tie" from the free encyclopedia Wikipedia (http://en.wikipedia.org). It is licensed under the terms of the GNU Free Documentation Licencse. In the Wikipedia you can find a list of the authors by visiting the following address: http://en.wikipedia.org/w/index.php?title=G-string+tie&action=history