A lonely shell of a man, most likely bald or receding. Find him in his in his natural habitat in the corner of the club, his 1-inch wonder in hand, saggy hoody hanging off his shoulders, grinning with a white substance lightly tugging at his upper lip hair while staring at the smaller men in the club. If you are ever approached by a Classic Kieron, follow with caution, to avoid being kissed by his white sloppy lips, offer a cider, slide it over, slowly. And then run.

Could also be described as a man with a tiny penis.

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.