I remember as a little human, looking at grains of salt (the store-bought, iodized kind) under a magnifying glass. If I recall correctly, each grain was a cube, or at least cuboid. So, take a sentiment about a cube with a cube!

(Looking at what I have written, it dawns on me that perhaps TEd intended to allude to the cuboid properties of salt, in a double-entendre sorta-kinda way?)