be missing some of (one's) buttons(redirected from be missing some of his buttons)
be missing some of (one's) buttons
To be mentally deficient, incompetent, or deranged; to be of unsound mind. My poor grandmother is missing some of her buttons after her stroke. I've been so sleep deprived lately that it feels like I'm missing some of my buttons!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.