You can't bluff a bluffer spoken language
You can't fool someone who has experience in or skilled at tricking people.
'You can't bluff a bluffer,' the John said after seeing Joe picking up two cards.
You can't bluff a bluffer. I've caught you doing the false shuffle. Let me shuffle it.
This phrase was formed based on the meaning of the word "bluff".
Doing something or using something a lot.
He's constantly drinking like it's going out of fashion.