NOTE: THIS ONLY WORKS ON SELECT WALLS, MOSLY KEYCARD DOORS AND THIN UNLOCKED WALLS AND CLOSED VENTS.

First, back into the wall in first person, then crouch, then zoom out, rotate your camera 180 degrees so you can see your face, then zoom in into first person and sometimes you might just ragdoll but a tip to not ragdoll is to jump while clipping. This works on any platform.