not playing with a full deck
智商有问题，思路混乱，或者行为怪异
口语·调侃智力或行为异常
英文释义
to be mentally impaired or lacking in intelligence or common sense
例句
He thinks he can fly off the roof; he's not playing with a full deck.
典故来源
源自扑克牌比喻，一副牌不完整意味着思维或智力有缺陷，流行于20世纪美国。