not playing with a full deck
Also found in: Acronyms.
not playing with a full deck
1. Not mentally sound; crazy or mentally deranged. A: "Look at that guy talking to himself on the corner." B: "I reckon he's not playing with a full deck."
2. Not very bright or intelligent; dimwitted. Jim's a nice guy, but with some of the foolish things he does, I wonder if he's not playing with a full deck.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
not playing with a full deck
mentally deficient. North American informalA deck in this phrase is a pack of playing cards.
Farlex Partner Idioms Dictionary © Farlex 2017