Furtive shibboleths A furtive shibboleth is a type of a shibboleth that identifies individuals as being part of a group, not based on their ability to pronounce one or more words, but on their ability to recognize a seemingly innocuous phrase as a secret message. For example, members of Alcoholics Anonymous sometimes refer to themselves as "a friend of Bill W.", which is a reference to AA's founder, William Griffith Wilson. To the uninitiated, this would seem like a casual – if off-topic – remark, but other AA members would understand its meaning.
Furtive shibboleths A furtive shi,bboleth is a type of a shibboleth that identifies individuals as being part of a group, not based on their ability to pronounce one or more words, but on their ability to recognize a seemingly innocuous phrase as a secret message. For example, members of Alcoholics Anonymous sometimes refer to themselves as "a friend of Bill W.", which is a reference to AA's founder William Griffith Wilson. To the uninitiated, this would seem like a casual – if off-topic – remark, but other AA members would understand its meaning.