I believe the correct descriptor is “bold-faced”, not “bald-faced”.
As in “bold-faced” type......
Is it Bold face lie or Bald faced lie?
Answer:
Both are used, with different contexts.
The older form, “bald-faced lie”, or “bare-faced lie” is one made that is recognized as obviously false.
The variation “bold-faced lie” is conversely applied to a lie spoken with conviction, as if it were the truth. The term bold can also mean a daring or brazen liar.
Some of the “bold-faced” usage could be by a generation that only thought what everyone was saying was “bold-faced” lie, understandable due to the fact that it is a 19th century colloquialism. Who would expect that it referred to lying without having your guilt hidden by a beard?
http://wiki.answers.com/Q/Is_it_Bold_face_lie_or_Bald_faced_lie
IIRC, bald face was actually balde, as in white faced, that is with no shame.