|We're building a new wiki, so information on this page may be out of date.|
Crouch-Clipping (CEOOB previously) is a movement-based method for getting through a ceiling in the Old Source Engine and the OrangeBox Engine speedrunning. It can be achieved multiple ways; either through crouching through a sloped surface or through flying. The glitch is extremely difficult to achieve, and other methods to go OoB have since been found to make this one obsolete.
Crouch-clipping was discovered December 9th, 2011 by Jared 'Centaur1um' O'Brien while playing a mod designed for Source Engine speedrunning, Blamod. Thanks to the mod's auto-recording feature, the occured instance of the glitch was recorded and put on YouTube.