The walker bonk scale is a medical scale from 0-100 on how hard someone has been hit on the head by someone or something else.
âDoctor heâs been hit on the head with a tyre ironâ â whatâs the level of impact nurse?â Heâs a 37 on the walker bonk scale.. only slight deformation of the skullâ â send him straight to the bonked specialistâ âright awayâ