be out of (your) mind with [boredom/fear/worry etc.]

to be extremely bored, frightened, worried etc..

He was four hours late and I was out of my mind with worry.

• Now you're talking!
• now you're talking
• number cruncher
• number crunching
• number is up
• number one
• numbers game
• nuts and bolts
• nutty as a fruitcake
• occur to
• occur to you
• odd man out
• odd one out
• odds and ends
• of a certain age
• of all people
• of all places
• of all things
• of a mind to
• of a mind to do something
• of a piece
• of a sort
• of course
• of dreams
• off agenda