Short for Gelatinous Cube, a monster in the Dungeons and Dragons universe in the category of unaligned Ooze, typically portrayed as a large cube-shaped creature made entirely of a translucent or transparent gelatinous substance.
The adventurers encountered a gelatinous cube blocking their path, leaving behind a trail of dissolved stone and bone fragments, and they quickly realized that they needed to find a way to bypass the glube without getting engulfed.
A cheap generic version of a personal pleasure lubrication that loses its viscosity, thus resembling an adhesive. Essentially, lube becoming glue-like.
"So I was balls deep in the bitches ass when I looked down and realized the condom was gone. They spent the next five minutestrying to fish it out. It was then I realized we shouldn't have bought the glube.