Few cards short of a full deck derogatory slang
If you say that someone is a few cards short of a full deck, you mean they are quite silly or mentally abnormal.
I thought he was a few cards short of a full deck when he told me to make money from selling fart!
I didn't allow John to join my team as I thought he was a few cards short of a full deck.
Every time he dances like that, I can't help thinking he is a few cards short of a full deck.
Extremely stupid
Very stupid, or silly
Stupid or crazy
(n): a fool person,
(adj): stupid, foolish, silly
The origin of this slang is not clear.
Hide the secret instead of dealing with problems.
The city management team's attempts to sweep the scandal under the carpet were not very effective.