1. rear guard.
2. a group that is behind or out-of-date in any field, esp. in one of the arts.
arrière-garde. Dictionary.com. Dictionary.com Unabridged (v 1.1). Random House, Inc. http://dictionary.reference.com/browse/arrière-garde (accessed: January 30, 2009).
Bob considered himself pretty 'hip' and 'with-it'; it was fairly obvious, not only from his use of 'hip' and 'with-it', but also from his dressing in bell-bottoms and earth-tone, paisley, silk shirts, that Bob was a member of the arrièr-guard. If we are lucky he will be the last to wear these fashions.