Climb The Walls Meaning

(idiomatic) To behave in a distressed or frantic manner; to feel very agitated.

Example: 1968 Jul. 5, "Never Like Anyone Else," Time:
  There are purists who climb the walls when German Conductor-Organist-Harpsichordist Karl Richter performs Bach. . . . To them, imagination—and Richter has plenty—is the ultimate transgression.