大言不惭
English Expression:
  1. n.  put on frills
  2. n.  brag unblushingly; boast with no consciousness of shame
  3. v.   boast unabashedly or shamelessly
French Expression:
  1. v.  proclamer sans la moindre pudeur, proférer des paroles ronflantes, se vanter sans retenue, hâbler sans honte, fanfaronner sans vergogne