Impossible cube ambiguity present in a Necker cube illustration, in which a cube is drawn with its edges as line segments, and can be interpreted as being in either of two different three-dimensional orientations. An impossible cube is usually rendered as a Necker cube in which the line segments representing the edges have been replaced by what are apparently solid beams. In Escher's print, the top four joints of the cube, and the upper of the two crossings between its beams, match one of the two interpretations of the Necker cube, while the bottom four joints and the bottom crossing match the
Gleaming the Cube to the cryptic question "Have you ever gleemed [sic] inside a cube?" that Garry Scott Davis (GSD) asked Neil Blender in an interview in the December 1983 issue of "Thrasher" magazine. In the film, Christian Slater's character defines "gleaming the cube" as "pushing your limits to the edge". The DVD contains an easter egg; by highlighting the skateboard on the main menu, viewers can watch a short featurette entitled "What Does Gleaming the Cube Mean?". Brian Kelly is an underachieving high school student in Orange County, California. An avid skateboarder, Brian is frequently at odds with his parents for his