Longman Dictionary of Contemporary English
double bluff
noun
EXAMPLES FROM CORPUS
▪ And assuming, of course, the call wasn't a double bluff.
Wiktionary
double bluff
n. An action which is intended to be perceived as a bluff, but which is not.
Usage examples of "double bluff".
Perhaps your identification of the pseudonymous Rappaccini as the person who made the flowers is a double bluff too.
I know you want to stay to see your jockey weighed in and watch Double Bluff saddled.
He went to the track to oversee Double Bluff's morning exercise, so she spent her mornings at the track.
On the surface, it begged to be identified as a mere lie, a vicious but half-baked slander, but that was double bluff.