stiff as a poker

(as) stiff as a poker

Very straight, rigid, or inflexible. Used to describe someone's physical posture or demeanor. The whole class sat in their chairs as stiff as pokers during the principal's lecture. He stood as stiff as a poker after his name was called, too nervous move.
See also: poker, stiff

*stiff as a poker

rigid and inflexible; stiff and awkward. (Usually used to describe people. *Also: as ~.) This guy's dead. He's cold and as stiff as a poker. John is not a very good dancer; he's stiff as a poker.
See also: poker, stiff

(as) stiff as a ˈpoker

(informal) (usually of people) very straight or upright in the way you sit or stand: The old lady was sitting upright in her chair, stiff as a poker.
See also: poker, stiff